CERES  (AP) — Authorities say a 77-year-old man has died amid triple-digit temperatures in California's San Joaquin Valley.

The death announced Wednesday by the Stanislaus County Sheriff's Department is the first reported fatality tied to California's weeklong heat wave.

A sheriff's statement says the man was found on the floor of his mobile home in Ceres south of Modesto on Tuesday night with a malfunctioning air conditioner blasting hot air at over 100 degrees. An autopsy determined the cause was heat and other medical conditions.

The Central Valley had many of the state's highest temperatures Wednesday in California's seventh day of scorching weather.

Fresno and Bakersfield had temperatures of nearly 110 degrees Wednesday, and Redding followed Tuesday's 116 degrees with 113 Wednesday.

Excessive heat warnings are in place throughout the state through Thursday.