A city official says a 15-year-old girl is dead after a fight broke out in a high school restroom in Delaware.

Alexandra Coppadge is a spokeswoman for Wilmington Mayor Dennis Williams. She confirmed on Thursday that the student had died. Coppadge says there was a confrontation involving multiple people in the women's restroom at Howard High School of Technology.

Wilmington Police spokeswoman Sgt. Andrea Janvier said by telephone that the assault took place around the time when students arrive at the school for the day. She said the girl was flown to A.I. DuPont Children's Hospital in critical condition.

Janvier says police are conducting several interviews and will be at the school for several hours. She referred further questions to Coppadge.