An off-duty firefighter opened fire Tuesday morning at a fire station north of Los Angeles, killing a 44-year-old member of the LA County Fire Department, fire officials said.

The shooting happened just before 11 a.m. at Los Angeles County Fire Station No. 81 in the 8700 block of Sierra Highway in Agua Dulce and touched off a rapidly unfolding series of events that ended with a standoff and fire that burned for hours at a property about 10 miles away in Acton.

Details about what led the gunfire were not immediately available, but authorities said it stemmed from some sort of dispute involving the shooter, also a member of Station 81, and victims.

Read more: NBC Los Angeles