A 16-year-old girl was stabbed to death last evening by a teenage friend, who then apparently tried to kill himself by slashing his throat, Monroeville police said.

Authorities did not release the name of the stabbing victim. But David Falvo, husband of Gateway school board President Cindy Falvo, said his wife knew the victim was Demi Cuccia, who would have been a junior at Gateway High School and a member of the cheerleading team.

Miss Cuccia was found outside townhouses in the 300 block of Elliott Road, off Route 22. The young man, 19, was found about 20 feet to 30 feet away in a parking area of the townhouses.

Monroeville Police Chief George Polnar said the two knew each other, but he does not know the extent of their relationship. He said the young man had come over to see Miss Cuccia. He said no one else was near or inside the house where the stabbing occurred.

She was rushed to Forbes Regional hospital in Monroeville, where she was pronounced dead.

The young man was in critical condition at Allegheny General Hospital. A resident of one of the nearby townhouses said he was a recent graduate of Gateway High School.