Three separate fights caused Lincoln High School in Northeast Philadelphia to be locked down for 45 minutes Tuesday, officials said.
City police arrested seven students, said Fernando Gallard, a spokesman for the Philadelphia School District.
The lockdown started at 1:15 p.m. and was lifted about 2, Gallard said.
Lincoln, on Ryan Avenue in Mayfair, has about 1,800 students. - Kristen A. Graham