LOOK: Truck heavily engulfed in flames, cause remains under investigation

Authorities are looking into what caused a truck in south Houston to go up in flames overnight Sunday. 

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Details were scarce, but firefighters were called out to Hwy 59 at the Bellfort Ave. exit a little before 5 a.m. where a truck went off the freeway main lanes and into the service road. 

The truck was heavily covered in flames and appears the fire was also on the main lanes. 

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Currently, it's unclear how many vehicles or people were involved in the incident. 

No other information was available, as of this writing. 

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