Police reportedly believe the prime suspect in the Sabina Nessa murder is still at large after releasing two men they had arrested for the teacher's killing.
Detectives are urgently to appeal for information about a mystery man who was captured on CCTV in Pegler Square, south east London, on the night Sabina, 28, was attacked.
Two men who were arrested in connection with the alleged murder have been released under investigation, the Metropolitan Police confirmed.
Sabina disappeared on September 17 as she left home to meet a man for a first date at a local pub. Her body was found in Cator Park, 200 yards from her home, on Saturday afternoon.
A 38-year-old man who was arrested on Thursday at an address in Lewisham in connection with the murder of has been released under investigation.
The man in the CCTV footage, who is dressed in casual clothing and appears to be clutching an object in his right hand,
