HOUSTON, Texas (KTRK) -- A portion of the Southwest Freeway is closed as crews work to clean up the aftermath of an 18-wheeler that caught fire.

ABC13 spotted the fire on Houston TranStar cameras around 2:30 a.m. on Tuesday, which closed all inbound main lanes of I-69 near Fannin.

So far, it is unclear what kind of cargo was in the trailer or if anyone was injured.