Four policemen in Glendale, Calif., were put on administrative leave after a video broadcast on Tuesday showing them grappling with a theft suspect, at one point kicking the suspect in the head. Officers, some in plain clothes, responded to a theft inside Glendale Galleria at around 7:10 p.m. Saturday, according to a statement from the Glendale Police Department. Officers made contact with the suspect inside the Dick 's Sporting Goods store, police said. As they attempted to arrest the suspect, a fight ensued and force was used by officers, according to the statement. Video obtained by CNN affiliate KCAL / KCBS shows suspect on his back as four police punch and kick him. The video of the arrest was taken by a passerby. The buyeur who recorded the incident, who did not want to be identified by the station, was outraged by the officer who kicked the suspect in the head, telling KCAL / KCBS that the officer wasn 't even there to start. Read More It was really hard to watch, we were traumatized said Melissa Navarette, identified by KCAL / KCBS as the sister of the suspect. She didn't want to be shown on camera, according to the station. We still have the whole video, like, stuck in our heads, she said. Stolen goods were found on the suspect, according to Glendale Police, and he was arrested for theft and resisting. force to an officer. Police said the merchandise came from another store in the mall. Police are investigating officers' conduct and asking witnesses to contact the department with any information about the incident. The police at Glendale are held to a high standard and we work hardto maintain the trust of our community, said a press release from GPD. We take these types of incidents very seriously. Appropriate action will be taken following the investigation.