Son of Detroit woman is among those killed in Orlando shooting

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The City of Orlando continues to release names and ages of victims of the nightclub shooting. As of Monday afternoon, Christopher Leinonen's name was on the list. He's the son of the Detroit woman whose emotional TV interview has been seen by millions.

Christine Leinonen knew her son, Christopher, was at Pulse with his boyfriend Juan Guerrero. She knew they left, but had not heard from him. Juan Guerrero's name is also on the victim's list.

"We haven't heard anything from my son at all. There's bodies left at the club that haven't been identified yet. My son is a good human being. This is so unnecessary," Leinonen said earlier in the interview.

Leinonen said she had been waiting outside the hospital since 4 a.m., waiting, hoping, and praying go get information about her son.

Forty-nine people were killed in the shooting in the nightclub attack. The gunman was also killed in a gun battle with police. Fifty-three others are being hospitalized for injuries, including five in grave condition.

Wielding an AR-15 semi-automatic rifle and a handgun, Omar Mateen, a 29-year-old American-born Muslim, opened fire at the crowded Pulse Orlando club early Sunday. He was killed in a gun battle with a SWAT team after police used explosives and a small armored vehicle to punch a hole in a wall and allow dozens of club-goers to escape, police said.

FBI Director James Comey said that Mateen had "strong indications of radicalization" and was probably inspired by foreign terrorist organizations.

He said  Mateen called 911 around the time of the attack and not only pledged loyalty to the Islamic State but also expressed solidarity with the Tsarnaev brothers who carried out the Boston Marathon bombing and a suicide bomber who died on behalf of the al-Nusra front, a group at odds with the Islamic State.

In the past few years, Mateen also expressed support for both al-Qaida and its enemy Hezbollah, Comey noted.

The FBI investigated Mateen for 10 months beginning in May 2013 after he was said to have made inflammatory remarks in support of terrorists.

Sunday's attack marks the deadliest mass shooting in modern U.S. history. The previous deadliest mass shooting in modern U.S. history was the 2007 attack at Virginia Tech, where a student killed 32 people and took his own life.