Eight crew ​members are ‌believed to ​have ​died in a ⁠B-52 ​bomber ​crash at California's Edwards ​Air ​Force Base on ‌Monday, ⁠CNN reported, citing ​the ​base.

According to an official statement from the air force base, the aircraft was conducting a routine test mission when it crashed at about 11:20 a.m. "Initial indications are that the crash was not survivable," the statement said.

The cause of the crash remains under investigation.

The crash site was located about 160 kilometers north of Los Angeles.

The B-52 Stratofortress, which entered service in 1955, is a long-range strategic bomber capable of carrying both nuclear and conventional weapons.