An internal affairs investigation is underway after a man died in custody of Pasadena police officers.

Jose Sauceda was arrested Saturday night after being accused of driving drunk.

Police tell Local 2 when they tried to do a field sobriety test, Sauceda resisted.

Officers say they took him to Bayshore Hospital where they did a mandatory blood draw. After a few minutes, they noticed Sauceda wasn't breathing.

Police are now waiting for the medical examiner to release the exact cause of death.

The case is now under investigation by Pasadena police detectives and internal affairs.