Mr Montague trained young boxing hopefuls in the city

Joe Montague, 64, was killed shortly after midnight on Sunday as he parked his Ford Focus car outside his home in the Foleshill area of the city.

Police confirmed on Monday the married grandfather had died of several gunshot wounds to the head.

Officers want to speak to anyone who may have seen a car with two people in it on Red Lane at the time of Mr Montague's death.

Mr Montague was deliberately targeted Chief Superintendent Stephen Dugmore

Colleagues of the former boxing champion, who was known for training new talent, said they were horrified by his death.

He was at the boxing arena in Coventry on Saturday where he is believed to have had a row on his mobile phone with someone.

Colleagues said they had no idea why he was killed.

Boxing promoter Kevin Houston said: "Joe had a couple of phone calls and went off and we didn't know why and we haven't seen him since.

Police are still unclear on the motive for the shooting

"Everyone is very, very distraught at the moment."

Boxer Andy Halder, who was trained by Mr Montague, said: "Tuesday night's fight is going to be dedicated to Jim Montague and his memory and we will be having a minute's silence."

Among Mr Montague's other charges was Neil Simpson, the former British and Commonwealth light-heavyweight champion, who lost a title fight against Nigerian Peter Oboh in March.