Bureau of Land Management fire officials say it appears a car or other vehicle on Interstate 84 started a grass fire which burned about 600 acres off the interstate in Elmore County Sunday night.

The fire burned along the highway for about 5 miles, from milepost 85.5 to Mountain Home, and resulted in temporary closure of the highway in both directions for a short period of time. The first report of the blaze was called in around 7:20 p.m..

BLM officials say the fire may have started in the median, then jumped to the south side of Interstate 84. There were two car crashes on the highway around the time of the fire — it's unclear if one of the crashes sparked the fire or not, or if the smoke was a factor in either of the crashes, officials said Monday morning.

Because the smoke from the fire reduced visibility along the highway, both directions of interstate were shut down for about 20 minutes. The eastbound lanes of I-84 along the fire were closed for over 2 hours, according to BLM reports.

Idaho 30 was also shut down, and power company officials were out replacing poles that were burned by the fire.

Firefighters from BLM were assisted by the Mountain Home Fire Department, Mountain Home Air Force Base, and Mountain Home Rural Fire.

Crews were able to contain the fire by late Sunday night and expect to have it controlled by 2 p.m., BLM officials said.