BRIDGEPORT - Students at all three of Bridgeport's public high schools were evacuated today after receiving bomb threats, but returned to class after nothing suspicious was found.

School administrators say Harding High School was evacuated after a written threat was found inside the school. Central and Bassick high schools were then evacuated after receiving threatening phone calls.

This is the fourth bomb threat made at Bassick High School in a week. Police say they already caught the student responsible for the two previous threats.