NAYA RIVERA called out for help before she accidentally drowned while boating with her son at Lake Piru in July, according to an investigative report obtained by Fox News on Friday.

The Ventura County Medical Examiner released the full report along with the autopsy report, which details the “Glee” actress’ final moments after she assisted her 4-year-old son, who was later found sleeping alone on the vessel wearing a life vest, up onto the rental boat.

According to the investigative report, before the accidental drowning, Rivera’s son Josey said he and the star “counted ‘1, 2, 3’ and then jumped off the boat together.”

Not too long after, Rivera told her son “to get back on to the boat,” according to the report.

“She helped him onto the boat and he then heard [Rivera] yell ‘help’ and she put her arm in the air. She then disappeared into the water,” according to the report.

Furthermore, the official autopsy report indicates Rivera, 33, “was considered to be a good swimmer,” and according to a lake attendant who rented her the boat, Rivera had declined a life vest, but he included one for her anyway.

Rivera was laid to rest at Forest Lawn Memorial Park in Los Angeles two weeks after her death July 24.

(SD-Agencies)