Around 2:30 a.m. on Friday, a man in his 20s was shot inside a home at 359 Mill Rock Road, police said.
Hamden police said on Friday morning that they were investigating two shootings in a six-hour span, one of which was fatal.
One was a suicide, police said on Friday afternoon.
Police are investigating the other shooting.
Edward Wright, 22, was shot in the back on Mill Rock Road at 2:45 a.m.
Wright had parked his car at Winchester Avenue and Mill Rock Road, heard a gunshot as he was walking to a Mill Rock Road residence and started running, police said.
A second gunshot was fired and struck him in the back, police said.
He continued to run, collapsed in the doorway and was taken to Yale-New Haven Hospital.
Police are investigating.
Anyone with information is asked to call Hamden Police at (203) 230-4040 or 230-4000.