MORRISANIA - Police are hoping new surveillance video will help catch a man who stabbed a Bronx teen to death last week.

Police say 18-year-old Troynisha Harris was stabbed in the neck last Saturday on East 166th Street.

According to police, Harris was sitting on a stoop last Saturday with a friend when the suspect got out of a car with a t-shirt over his head and stabbed them.

The friend survived the attack.