A 30-year-old man who was pulled from Lake Lanier last week died Thursday, which is a day after his 9-year-old son’s death, authorities confirmed.

Libao Chen, of Hoschton, tried to rescue his son, Ethan Chen, after he didn’t surface at the beach near Margaritaville at Lanier Island last Thursday, Hall County fire spokesman Zach Brackett previously told AJC.com.

RELATED: Man, 9-year-old son rescued from Lake Lanier in serious condition

The father slipped into the water and didn’t reemerge until lifeguards and bystanders on the beach found him and the boy. Lifeguards attempted to resuscitate both of them until paramedics arrived.

About 2 p.m. Wednesday, Ethan died at Children’s Healthcare of Atlanta, the Georgia Department of Natural Resources said. On Thursday, Libao died at Northeast Georgia Medical Center.

RELATED: 9-year-old dies after being pulled from Lake Lanier; father still critical

Their causes of death have not been released. An investigation by the DNR is ongoing.

In other news:

Police told Channel 2's Lauren Pozen that the incident happened in the early morning. The woman said the man grabbed her. She wasn't injured.