19 students, 18 of them girls, charged after high school brawl in upstate New York

ELMIRA, N.Y. -- Authorities say they've charged 19 students, 18 of them girls, in connection with a brawl that broke out at an upstate New York high school.

Local media report that the Chemung County Sheriff's Office announced the arrests Wednesday, a week after a large fight occurred shortly before noon March 18 in the main lobby area at Elmira High School.

Officials say the fight appears to have been planned. The melee led to the school being placed on lockdown for a short period.

The arrests came after investigators and school officials viewed the building's security camera footage as well as video recorded on students' personal devices and posted on the Internet.

Police say those arrested included one boy and 18 girls between the ages of 15 and 18. The charges include riot and disorderly conduct.