By Richard Weizel

MILFORD, Connecticut (Reuters) - A Connecticut high school girl was killed on Friday in an attack inside the school and authorities were investigating reports that she was stabbed by a fellow student after rejecting his invitation to the prom, police said.

The victim, Maren Sanchez, 16, a junior at Jonathan Law High School in Milford, was pronounced dead at the hospital shortly after the 7 a.m. attack, Milford Police Chief Keith Mello told a news conference.

Mello said she was stabbed by a 16-year-old male, who is now in custody.

"There was blood on her neck. It was awful," said 16-year-old Sam Garcia, a junior at the school, as he walked home. "I saw the girl lying on the stretcher when they took her out."

The incident took place on the morning of the junior prom, which was set to begin at a banquet hall in nearby Stratford on Friday at 7 p.m. Because of the incident, the prom will be rescheduled, school officials announced.

Police were investigating reports from students that the girl had turned down the boy's invitation to the prom.

The school, located in a shore town on Long Island Sound about 11 miles southwest of New Haven, was on lockdown during the incident, declared an early dismissal at 9 a.m.

(Editing by Barbara Goldberg; editing by Gunna Dickson)

[Crime scene image via Shutterstock]