A 32-year-old U.S. citizen died in custody of Border Patrol agents in South Texas, the government agency announced Wednesday.

The man, identified as James Paul Markowitz, was arrested Tuesday after being identified as a suspect in a smuggling case involving undocumented immigrants, U.S. Customs and Border Patrol said in a statement to HuffPost.

Border Patrol agents assigned to a station in Brackettville, Texas, arrested Markowitz at 3:30 p.m. on Tuesday, according to the statement. Markowitz started showing signs of distress during processing at the station and EMT-certified agents administered first aid, the agency said. He was transferred to a local hospital and pronounced dead at 9:37 p.m.

In a statement to BuzzFeed, which first reported on the death, CBP said Markowitz exhibited signs of distress around 6 p.m. Emergency services arrived on the scene at 6:40 p.m. to transport the patient according to the agency.

The statement provided to HuffPost did not include further details surrounding Markowitzs health or death.