Detectives are still looking for a fourth man they want to question about the fatal stabbing of 21-year-old Jordan Ajobo in North Woolwich in November, Scotland Yard confirmed last light.
They are appealing for help to locate Cristiano Filipe, also 21, and are advising the public not to approach him, but to dial 999.
He was one of two men they put out an alert for last month. They other was arrested January 11 after being detained in the West Country for an unrelated matter by police in Exeter, but later released under investigation.
They still want to trace Filipe and are appealing to anyone with information on his whereabouts or information about the stabbing to call the incident room on 020-8345 1570, tweet @MetCC or call Crimestoppers anonymously on 0800-555111.
Jordan Ajobo found stabbed on the approach to the Woolwich Ferry at Pier Road at 8.10pm on November 8. He was given first-aid, but died in hospital just over an hour later. A post-mortem examination at East Ham Mortuary gave cause of death as a stab wound.
Two other men aged 21 have also been arrested, one on suspicion of murder, the other with suspicion of assisting an offender, both since released under investigation.
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