Investigation into deadly B-52 bomber crash could take months, US officials say

Bomber that crashed during test flight at Edwards air force base in California killed all eight crew members

The investigation into a US air force bomber's deadly crash during a test flight at a California base on Monday could take up to six months to complete, officials said.

The Boeing B-52 Stratofortress, carrying eight people, crashed in a fiery explosion that sent up thick plumes of smoke at the Edwards air force base in the Mojave desert, about 100 miles (161km) north-east of Los Angeles.