A 21-year-old man is set to be charged after setting fire to a medical cart inside a freestanding ER, according to Alamo police Lt. Eduardo Garza.

The fire happened Sunday at around 7 a.m. at the South Texas Health System ER Alamo at 140 East Frontage Road, Garza said.

The unidentified suspect was a patient who fled on foot following the fire and was found in a field near the freestanding ER.

The man faces charges of arson and resisting arrest, Garza added.

This is a developing story, check back for updates.