"The man is of Asian appearance, aged in his late 20s to early 30s, five foot four inches to five foot six inches tall (163-168 centimetres), of slim build, with piercing eyes, a pointed, pale-skinned face, short black/dark coloured hair, and a goatee-style beard," police said.
They also want to trace a second Asian man in his 30s, described as having a stocky build, about five foot nine inches to five foot 11 inches tall and with short black hair.
Detectives last month said they had found a knife and brick used on the attack on Farooq, 50, who was found with head injuries and stab wounds in north London on September 16. He had been attacked as he returned home from work.
No arrests have yet been made and police said they retain "an open mind as to a motive behind the killing".
Farooq was a founding member of the Muttahida Qaumi Movement (MQM). He had claimed asylum in Britain in 1999.
COMMENTS (1)
Comments are moderated and generally will be posted if they are on-topic and not abusive.
For more information, please see our Comments FAQ