HOUSTON — A man was holding at least two people hostage on Saturday at a hospital in the Houston suburb of Tomball, authorities said.

The Harris County Sheriff’s Office said in a statement it did not know whether the man holding the two people at Tomball Regional Medical Center was armed.

The Sheriff’s Office said on its Twitter page that the man is the distraught father of a patient at the hospital.

Tomball Regional Medical Center has more than 350 beds and employs 238 active physicians, according to its website.