A prosecutor in Sicily confirmed this week that he’d begun an investigation into allegations that a U.S. Navy ship appeared to have initially ignored cries for help from migrants aboard an inflatable raft off Libya—a delay that may have led to the deaths of 76 people including a baby.

“If the first time we had seen the ship, if it had come and helped us, there wouldn’t have been deaths,” charged one of the survivors.

Survivors described the events of the June 12 shipwreck in harrowing details in a video published by Italian news site La Repubblica.

To hear the survivors in their own words, watch the video posted by La Repubblica below. (The subtitles are in Italian, some of the survivors are sharing their stories in English, while others are doing so in French.)

“We saw the American ship,” said one survivor referring to the USNS Trenton. Several said they were close enough to see the American flag on the ship, adding that the sight of the vessel brought a sense of relief as the small dingy had begun to take on water. Trying to get the Trenton‘s attention, the migrants stood up, waved their shirts in the air, and called out.

But the U.S. Navy ship, according to survivors, did not approach them, but rather appeared to be moving further away even as the migrant ship tried to follow it.

The U.S. Navy and aid groups acknowledged that the ship ultimately did come to provide aid, helping 41 of those still alive.