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--Employees at the Pulse Club told ABC News overnight they recognized Omar Mateen as a regular.
--The city of Orlando has identified all 49 victims from last weekend’s shooting.
--President Obama travles to Orlando Thursday to pay his respects to victims' families, and to stand in solidarity with the community as they embark on their recovery.  The president says it appears that the shooter, Omar Mateen, was inspired by "extremist information" disseminated via the internet, but the massacre was not part of a larger plot.  The President convenes a National Security Council meeting on ISIS Tuesday morning and then delivers a statement to the press.
--FBI Director James Comey defended his agency’s earlier investigation of Omar Mateen, saying there’s nothing agents "should have done differently" in their 2013 and '14 interviews with Mateen, who killed 49 people Sunday morning at a nightclub in Orlando, Florida.  
--The owner of a gun store where the Orlando nightclub shooter bought his weapons says the gunman passed a full background check and that if he hadn't bought the guns from him, he would've purchased them somewhere else.  Ed Henson is the owner of the St. Lucie Shooting Center. He said Mateen legally purchased a long gun and a handgun about a week or so ago on the same day.
- Did the shooter target Disney?  The wife of Omar Mateen is now cooperating with FBI investigators and has provided key details about his activity before the deadly nightclub shooting, including how he may have scouted a number of alternate locations for his attack, such as Disney properties in the area, a senior counter-terrorism official told ABC News.  Disney, the parent company of ABC News, declined to comment on the purported prior threat, but said it has been increasing security measures “for some time.” 
--Vigils were held in Orlando, at the symbolic Stonewall Inn in Nwe York City and in hundreds of venues around the world on Monday to remember those who lost their lives in the attack and to spread a message of love and acceptance moving forward.

A moment of silence on the House floor for the Orlando victims was quickly followed by shouts of protest. Democratic lawmakers erupted on the House floor with loud criticism of House Speaker Paul Ryan and other Republican leaders for leaving the nation's gun laws untouched. Some protested by leaving the House chamber during a moment of silence honoring the victims. Democrats yelled "Where's the bill?" and "No leadership!" Monday evening after Ryan held a moment of silence for 49 people killed at an Orlando nightclub early Sunday.

VOTE 2016
- Donald Trump vowed Monday to impose a broad ban on immigration from areas of the world with a history of terrorism and suggested some Muslims in the United States are turning a blind eye to unfolding plots, as he outlined an aggressive response to the deadly attack in Orlando.  On the campaign trail, Trump heads to Greensboro, North Carolina for a Tuesday rally.  He's revoked the press credentials from The Washington Post saying he felt they had inaccurate reporting.
- Hillary Clinton is pushing for tighter gun rules.  In her first rally since becoming the presumptive Democratic nominee, Clinton blasted regulations that allowed a lone gunman to purchase weapons that he used to kill 49 people in Orlando over the weekend.  “We may have our disagreements about gun safety regulations, but we should all be able to agree on a few essential things,” Clinton said, speaking to a crowd gathered at the Cleveland Industrial Innovation Center. “If the FBI is watching you for a suspected terrorist links, you shouldn't be able to just go buy a gun with no questions asked.”  Clinton heads to Pittsburgh for an afternoon event.

A senior French police officer and his female companion were killed following an attack Monday evening by a knife-wielding man in a distant suburb of Paris, officials said. The attacker was also killed in the ensuing confrontation with police, while a three-year-old boy was rescued by officers.  The Islamic State's Amaq news agency cited an unnamed "source" as saying an IS fighter carried out the attack, but the extremist jihadist group has not officially claimed responsibility for the attack.

While this is an annual event marked by the World Health Organization, it is especially poignant this year as thousands line up to donate blood for the Orlando nightclub victims.   Some blood donation places are so busy that they are booking dates two weeks in advance.

Mourners paid tribute to the slain singer at a vigil held in her hometown of Evesham Township, New Jersey. Grimmie was shot and killed by a man while she was signing autographs after a show in Orlando Friday night. "The Voice's" Adam Levine has offered to pay for Grimmie's funeral.

The Cleveland Cavaliers push the NBA Finals to a Game 6 back on their homecourt.  The Cavs deafeated the Golden State Warriors in Game 5 in Oakland Monday night 112-97.  The Warriors were without one of their star players, Draymodn Green, who was suspended for the game.

Homeland Security Secretary Jeh Johnson says Congress has approved his request for $28 Million in a funding shift to convert part-time Transportation Security Officers to full time officers for the busy travel season.

NATO's chief announced Monday that the alliance will agree this week to send four multinational battalions to the Baltic states and Poland to boost their defenses against Russia.  Jens Stoltenberg, the NATO secretary-general, said alliance defense ministers will formally approve the deployment plan drafted by NATO military planners at a meeting that begins Tuesday in Brussels.  Estonia, Latvia, Lithuania and Poland, four of NATO's members that feel most threatened by Russia, will each be reinforced by "a robust multinational battalion," Stoltenberg told a news conference.

The sentencing hearing for former Olympic athlete Oscar Pistorius continues in Pretoria, South Africa.  It began Monday and could last several days before the judge announces the sentence. The minimum sentence for murder in South Africa is 15 years in jail, though a judge can reduce that sentence in some circumstances.

Egyptian officials probing the crash of EgyptAir Flight 804 said Monday the plane veered off course before plunging into the sea, suggesting an abrupt in-flight explosion didn’t bring down the aircraft. 

The trial for the Baltimore police officer--who drove the van that transported 25-year old Freddie Gray continues following testimony from his colleague and medical experts.