A vehicle engulfed in flames started a grass fire east of Falcon Sunday and El Paso County Sheriff' Office investigators were trying to determine the cause of the blaze, said Lt. Joe Roybal.

The fire was reported about 10:20 a.m. at the intersection of Falcon Highway and Murr Road, east of U.S. 24, Roybal said.

The flames spread to the surrounding grass area and burned about one-quarter of an acre. No injuries were reported.

Officers closed the intersection for hoursduring the investigation. County officials did not release the identity of the vehicle's owner, Roybal said.