A third child has died, nearly a week after suffering critical injuries when a barge struck and sank a sailboat that was part of a sailing camp in Miami, the U.S. Coast Guard said Sunday.

The Coast Guard confirmed the death of a 10-year-old girl, though they did not provide her identity.

“Our hearts continue to mourn with all those impacted by Monday’s tragic incident, especially with the passing of another one of Miami’s children today,” said Capt. Frank Florio, commanding officer of Coast Guard Sector Miami. 

The former mayor of Bal Harbour, Florida, Gabriel Groisman, later identified the 10-year-old as his cousin, Arielle Buchman, in a post on X.

Florio said in a Tuesday evening press conference that the young girls were wearing life vests at the time of the collision.

Six people, including four children, were aboard the sailboat at the time of the crash. Three children have died as of Monday. (WSVN-TV via AP)

Florio said the tugboat captain’s alcohol level was tested after the crash, which is standard procedure. He did not disclose the test results or details of the captain’s statement to investigators.

The popular sailing program, started in 1927, boasts of summer camps in a “very secure area at the Biscayne Bay,” their website says. Biscayne Bay is a heavily trafficked waterway, serving commercial shipping, recreational boating, sailing camps and clubs, and fishing and diving.

Fox News Digital’s Sarah Rumpf-Whitten contributed to this report.