ORLANDO, Fla. —Federal investigators promised to provide more insight as to what was happening inside the Pulse nightclub after a gunman started a deadly assault that was the worst mass shooting in modern U.S. history.

The FBI was releasing on Monday a printed, partial transcript of the conversations between the gunman within the Pulse gay nightclub and Orlando police negotiators, U.S. Attorney General Loretta Lynch said.

An FBI spokesman said agents would offer further details about the shooting, including the transcripts, at a Monday news conference near the nightclub.

The release is coming a day after tens of thousands of people held a candlelight vigil in the heart of downtown Orlando for the 49 victims who died in the massacre. The victims also were remembered at church services and at makeshift memorials throughout Orlando.

“As a community, it’s important that we gather together to show our support because only together can we move forward,” said Gabrielle Claire, a musician and Universal Orlando worker who says she knew three Pulse victims who died. She was holding a “Hugs for Healing” sign at the vigil and numerous strangers came up to hug her.

“We don’t have to be afraid of holding each other. We don’t have to be afraid of saying to other people, ‘I’m here for you,’” she said.

Meanwhile, hospital officials said four people remained in critical condition Monday morning, more than a week after they were wounded in the attack.

Orlando Regional Medical Center said 18 victims from the shooting were still at the hospital and three more surgeries were scheduled for Monday. The other 14 patients are listed in stable condition.

Lynch said in interviews Sunday on several news shows that the FBI would release a partial, printed transcript of the conversations between gunman Omar Mateen from within the Pulse nightclub and Orlando police negotiators. Armed with a semi-automatic weapon, Mateen went on a bloody rampage at the club June 12 that left 49 people dead and 53 others seriously hurt. Mateen died in a hail of gunfire after police stormed the venue.