[Updated at 1:13 p.m. Headline updated to "2 shot at Gardena High School; gunman still at large." Initial reports had said that three students had been shot.]

[Updated at 11:55 p.m. A student dressed in black who allegedly shot three fellow pupils at Gardena High School surrendered to police in a dramatic end to a standoff.

TV footage showed students running out of a classroom where the alleged gunman was hiding. Police then handcuffed the student and took him away.

The shooting occurred about 10:30 a.m. on the campus at 1301 W. 182nd St. The alleged gunman apparently pulled the gun out of his backpack. Officials said the gun went off, with one bullet hitting several students, a source told The Times. One students was hit in the head, another in the neck. Their conditions were unknown.]

Lt. Steve Prendergast said officers were on the scene investigating what happened. The school was placed on lockdown.

[Updated at 11:13 a.m.: TV footage showed police cars and fire engines lined up in front of the school and one victim being take out to a waiting ambulance.

Police helicopters were searching the area for the suspect, who fled from the high school on foot.

A source confirmed that the suspect and at least one of the victims were students.]

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Photos: Gardena High School shooting

-- Andrew Blankstein and Sam Allen