Officer Arrested for Aggravated Assault with Deadly Weapon

Published on October 16, 2026

SAN ANTONIO (October 16, 2026) – San Antonio Police Officer Mark Castillo was arrested for Aggravated Assault w/Deadly Weapon following the issuance of an arrest warrant for an off-duty incident that occurred September 26, 2026.

Castillo, a 25-year veteran of the Department, is currently assigned to SAPD’s Patrol Division. He has been placed on Administrative Duty.

The San Antonio Police Department is conducting both a criminal and administrative investigation into this incident.