The FBI's Dallas office is seeking 32-year-old Benjamin Hanil Song, a former Marine Corps reservist, in connection to the ambush at the Prairieland Detention Center, according to a wanted poster for Song.

Phones buzzed across Texas just before 8 p.m. Wednesday with a high-priority emergency alert. But it wasn't about flooding, a storm, or a missing child. It was about a five-day-old shooting at an ICE detention center hundreds of miles away.

Benjamin Hanil Song is accused of shooting an Alvarado police officer during an attack on the Prairieland Detention Center.

A Blue Alert was issued statewide in Texas for Benjamin Song, a suspect in the July 4 "ambush" at an ICE facility in Alvarado where officers were shot. DALLAS - After a Blue Alert was sent to the entire state of Texas Wednesday evening for a suspect wanted ...