Orlando Grieving One Week After Shooting, But Also Demanding Action

ORLANDO, Fla. (CBSNewYork) -- It's been one week since a gunman killed 49 people and wounded more than 50 others inside an Orlando night club.

On Sunday,  thousands gathered for a community vigil. Meanwhile, the U.S. attorney general is preparing to reveal new information about the investigation, CBS2's Weijia Jiang reported.

Church bells rang in downtown Orlando at 2:02 a.m. Sunday, exactly one week since the gunman went on a rampage at a gay nightclub.

PHOTOS: Orlando Nightclub Shooting Victims

"He's gone but he's never going to be forgotten," Madeline Obregon, a friend of one of the victims, said.

Obregon worked with Luis Vielma at Universal Studios. Like many, she went to church to find peace. Several services included a moment of silence.

"It's very important people come together and show love and forget about the hate out there even if it's just for a little while," Obregon said.

Volunteers set up for a fundraiser and vigil to take place on Sunday evening in Orlando to come together not only to grieve, but to demand action.

"We need a background check on every gun sale in America and that's not happening," survivor Wayne McNiel said.

As the gun control debate continues, U.S. Attorney General Loretta Lynch is intensifying the investigation.

"Tomorrow, we will be releasing a partial transcript of the killer's conversations from within the nightclub with the Orlando negotiators," Lynch said.

She plans to meet with survivors and investigators in Orlando on Tuesday as the city continues to heal.

Investigators are still interviewing witnesses. Lynch said one key goal of the investigation is to determine why the gunman, Omar Mateen, targeted the gay community. Lynch also said there is no update on whether Mateen's wife will be charged after admitting she knew her husband wanted to launch an attack.