— The Yakima County Coroner on Sunday released the names of the two people who drowned in Rimrock Lake on Saturday.

Cristian A. Sanchez, 14, and Josefina Guerrero, 29, both of Yakima, drowned Saturday morning while near a peninsula on the southern side of the lake, authorities said. The two were not related or acquainted.

According to a news release from the Yakima County Sheriff’s Office, Guerrero swam out into the lake to retrieve a flotation device, and the boy offered to help her.

Both were able to swim, but they became exhausted after Sanchez began to panic and pulled Guerrero under the water, the release said. Neither was able to return to shore.

Bystanders jumped in and pulled Guerrero to shore, where some performed CPR on her but were unable to revive her. Paramedics who arrived on the scene about 11:45 a.m. couldn’t revive her either, the release said.

About two hours later, a sheriff’s office rescue team found Sanchez roughly 25 feet from shore where the water was 10 feet deep, the release said.