Authorities inspect a burnt-out car that started the Montezuma Fire. Photo courtesy of the San Diego Sheriff’s Department.

A fire near Borrego Springs in far eastern San Diego County was nearly contained Sunday.

The 62-acre “Montezuma Fire” was 80 percent contained as of 9 a.m., according to Isaac Sanchez of Cal Fire San Diego.

Montezuma Valley Road was re-opened in the vicinity of the fire as of about 8 a.m., according to the San Diego County Department of Public Works. The road had been closed most of Saturday.

The blaze began as a vehicle fire in the 800 block of Montezuma Valley Road, and later spread into nearby brush, Jon Heggie, also of Cal Fire San Diego, said Saturday.

The fire was reported as a 2-acre blaze before noon, but it quickly grew to an estimated 15 acres by 1:45 p.m. Cal Fire was later able to more accurately estimate the true size to be much larger once the blaze was closer to containment, Sanchez said.

Twenty engines and two helicopters responding to the brusher managed to halt its forward progress Saturday. Six engines remained Sunday morning, Sanchez said.

No structures were believed to be threatened.