Authorities investigate shooting at the Islamic Center in San Diego...

Swipe or click to see more REUTERSEmergency workers respond at the scene of a reported active shooter situation at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSA police officer stands guard as emergency workers respond at the scene of a reported active shooter situation at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSScott Wahl, San Diego's Chief of Police, speaks during a press conference following a shooting at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSChildren hold hands with family members as they leave the mosque, at the scene of a shooting at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSScott Wahl, San Diego Chief of Police, speaks during a press conference following a shooting at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSScott Wahl, San Diego's Chief of Police, speaks during a press conference following a shooting at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSA girl walks with her family as she leaves school, at the scene of a shooting at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSA girl walks with her family as she leaves school, at the scene of a shooting at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSSecurity officers respond at the scene of a reported active shooter situation at the Islamic Center, in San Diego, Calif., May 18, in this picture obtained from a video. Swipe or click to see more REUTERSA parent passes under yellow tape cordoning an area, as he carries his child while they leave the mosque, at the scene of a shooting at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSA parent carries his child while they leave the mosque, at the scene of a shooting at the Islamic Center in San Diego, California, May 18. Swipe or click to see more REUTERSPeople line up behind yellow tape of a cordoned area, waiting to be reunited with their children from school, as emergency workers respond at the scene of a reported active shooter situation at the Islamic Center, in San Diego, Calif., May 18. Swipe or click to see more REUTERSMen console each other as they sit on a sidewalk, near the scene of a reported active shooter situation at the Islamic Center, in San Diego, Calif., May 18. Swipe or click to see more REUTERSPolice stand guard, as emergency workers respond at the scene of a reported active shooter situation at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSEmergency workers stand guard behind a fence and a yellow tape, to cordon the area, at the scene of a reported active shooter situation at the Islamic Center, in San Diego, Calif., May 18. Swipe or click to see more REUTERSMembers of the Muslim community use their phones at the scene of a reported active shooter situation at the Islamic Center, with yellow tape placed behind them to cordon the area, in San Diego, Calif., May 18. Swipe or click to see more REUTERSEmergency workers respond at the scene of a reported active shooter situation at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSEmergency workers respond at the scene of a reported active shooter situation at the Islamic Center in San Diego, Calif., May 18. Swipe or click to see more REUTERSEmergency workers respond at the scene of a reported active shooter situation at the Islamic Center in San Diego, Calif., May 18.