After being picked out by Philippe Coutinho, Messi then doubled the score-line, holding off two defenders before finding the net with a trademark finish, which he nearly passed into the goal.
The win gave the Catalans a 12-point lead at the top of the table ahead of tomorrow's Madrid derby, with Barca now just a few points away from being crowned champions.
Barcelona head to Roma for the second leg of their UEFA Champions League quarter-final on Tuesday.
They equalled Real Sociedad's record of 38 matches unbeaten across 1978-79 and 1979-80 - and are now targeting becoming the first team to go unbeaten in a 38-game season in Spain's top flight.
European media outlet Don Balon say Messi - who is a hugely influential figure at the club - has told Barca bigwigs to let Alcacer leave.
After his team-mate's big miss, Messi took over the show. His free-kick for the opening goal of the night was stunning.
Five minutes later, he was at it again.
Leganes nearly threw a spanner in the works early in the second half when El Zhar's cross from the right met by Claudio Beauvue's powerful header, which only just cleared Marc-Andre ter Stegen's crossbar.
Messi's first-half double effectively wrapped the game up before the interval and Barca took their foot off the pedal in the second period. Rakitic has been able to adapt to a holding midfield role when usual anchor Sergio Busquets has been absent, while Sergi Roberto has proved as comfortable at right back as in midfield.
Nevertheless, the win was sealed in the 87th minute as Dembele turned provider to pick out Messi, who completed his hat-trick with a smart finish from close range, 3-1.
Coutinho, whose relationship with the 30-year-old is gradually strengthening as every 90 minutes passes by, found the Pichichi leader on the edge of the area, and three touches later the ball was nestling into the back of Cuellar's net after the majestic finisher held off two Leganes defenders before dispatching his left-footed effort.
As they headed into the first corner on the final lap, Bottas had a half-hearted attack but he was just not close enough. Sebastien Vettel stormed to victory with a masterful drive in Bahrain to make it two from two for the German in 2018.
The measures affect the seven oligarchs, 12 companies they own or control, as well as 17 senior Russian government officials. The action targeted Russian oligarchs whose companies have wide-ranging involvement in global capital markets.
The Alliance of American Football league named Spurrier head coach of a new professional league team based in Orlando. To help him steer the league, Ebersol has brought on former NFL general manager Bill Polian, now an analyst for ESPN.
Ms Haley has called for a vote on Tuesday on a draft resolution to set up a new inquiry into the use of chemical weapons in Syria. The new proposed United Nations resolution includes rival Russian and Western proposals for a new body to assess blame.
In response, an evacuation agreement signed with the Jaysh al-Islam rebel group that contorls Douma has been put on hold. There are tens of thousands of people estimated to be living in Douma, according to Reuters .
Total volume is the number of shares or deals that point towards the overall activity of a security or market for a given period. Zeke Ashton increased its stake in Brown & Brown Inc (BRO) by 82.81% based on its latest 2017Q4 regulatory filing with the SEC.
Our winds will stay out of the northwest however and this will help to keep high temperatures chilly...generally mid 40s. Temperatures today are quite cold in the 20s and 30s! This afternoon temperatures will peak in the mid to upper 60s.
If current gains for S&P 500 hold, it would be the best three-day run since Trump's election victory in November 2016. JPMorgan Chase gained $1.79, or 1.6 percent, to $112.22 and Citigroup added $1.16, or 1.7 percent, to $70.47.
Having emerged victorious and won the first license, AMC will open its first theater in Riyadh in two weeks time on April 18. The first film the cinema will screen will be hit Marvel superhero flick Black Panther , a source added to Reuters .
But WWE announcing Monday that Lesnar re-signed with the company certainly quelled any talks about his departure at least for now. Back at WrestleMania 31, Reigns had his singles match with Lesnar interrupted by Seth Rollins and a Money in the Bank briefcase.
Barley said it was now up to Spain to prove their embezzlement charges against Puigdemont , which she said "won't be easy". Misuse of public funds carries a sentence of around eight years at Spain , while a rebellion sentence can hit 30 years.
Uber Makes a Bet on Bike-Sharing With JUMP Bikes Buy
Khosrowshahi said in an interview that Jump was "a ideal fit" for Uber's expanding portfolio beyond its core ride-hailing service. An integrated U-bar also enables riders to lock the bike to light poles, trees, benches, or traditional bike racks.
Japan sack their manager ahead of the 2018 World Cup
The Japanese qualified for the finals for the first time in 1998 and have been present at the World Cup ever since. Japan faces a tough group, with opening matches against Colombia and Senegal before it faces off against Poland.
Korea seeks summit with Trump in Pyongyang
The countries will hold at least one more meeting on these issues to discuss the summit's agenda. South Korean President Moon Jae-in and US President Donald Trump have both agreed to meet Kim.
Turnout high in Hungary as Orban fights to retain power
Some 8 million voters cast their votes in more than 10,000 polling stations from 6 am (0400 GMT) local time until 7 pm (1700 GMT). The strongest opposition party is the formerly far-right Jobbik, which has recast its image as a more moderate nationalist force.
Oil price hit by trade war fears
China's ambassador to the U.S., Cui Tiankai, also said his first choice would be to consult the U.S. over trade. West Texas Intermediate (WTI) crude CLc1 futures fell 14 cents to settle at $63.37 a barrel, off 0.22 percent.
Police probe profile of Germany attacker
German news agency dpa reported that police confirmed arrests in connection with the half-marathon but gave no further details. Meanwhile, investigators are still trying to establish the motive for the ramming.
J&K: Decapitated body of abducted man found in Hajin
Last year, a similar case of slitting of throat by the militants surfaced in Hajin. "The inhuman way in which the youth was done to death is against the social ethos and cultural value system of the State", said Ms.
Salman Khan gets bail in 1998 Blackbuck Poaching Case
The relief is temporary for the actor as the Bishnoi community, who registered the case earlier are unhappy with the bail verdict. Khan applied for bail after the lower court Thursday ruled him guilty under wildlife protection laws and ordered the jail term.
Conor McGregor storms UFC 223 media day
Conor McGregor hit the headlines for the wrong reasons on Thursday after being stripped of his UFC lightweight title. This weekend's fight against Alex Caceres provided Lobov an opportunity to try to end a two-match losing streak.