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Facebook accounts of Orlando gunman under investigationMultiple Facebook accounts believed to be associated with the Orlando gunman may help investigators determine why the gay nightclub was targeted.
President Obama has arrived in Florida to console family members of those killed at the Pulse nightclub. CBS news has learned federal agents are investigating multiple family members of the Orlando massacre shooter. They are already taking a very close look at Omar Matteen's wife. Law enforcement sources say Noor Salman purchased ammunition with her husband and they believe she drove with him as he Scouted the nightclub. At the end of all of our interviews, however long that takes, if someone is able to be charged in this investigation, we will bring them to justice. Investigators and lawmakers are also digging into the killer's use of social media. It is believed at least five Facebook accounts were associated with the 29 year old. In one post just before the attack, Mateen raged about the filthy ways of the west. The Senate Homeland Security Committee sent a letter to Facebook CEO Mark Zuckerberg asking the company to help investigators as they try to figure out why the shooter picked the gay nightclub for his killing spree. This is just one of the memorials here in Orlando. You can see there are pictures and flowers and hand-written notes that together Tell the stories of the 49 lost lives. This woman fought back tears and told us she came to the memorial to put faces to the names of those who died. She says it's part of the healing process as the city begins to say goodbye to those who were killed. All who went out for a night of fun And never came home. Kenneth Craig, CBS News, Orlando. [SOUND]