The family of a man shot dead by police have called for a murder investigation into his killing – and have questioned whether his life would have been “cut short” if he were not black.

Chris Kaba, who was due to become a father within months, died after a chase involving armed officers that ended in Streatham Hill, south London, on Monday night.

His Audi was hemmed in by two police cars in a narrow residential street before one round was fired from a police weapon.

His family said on Wednesday they were “devastated” and needed “answers and accountability” over his death.

A statement released through the charity Inquest said Mr Kapa’s family “seek a homicide investigation into his death from the outset”.

The Independent Office for Police Conduct (IOPC) have been told of the demand of the family who “do not want any delay as has happened in other fatal shootings – otherwise we and the wider public can have no confidence that the police will be held to account”, the statement added.

The family said: “We also want the IOPC to tell us whether or not a weapon was found in any search of the vehicle that Chris was driving.

“We have not received this information even though the shooting happened almost two days ago.”

Mr Kapa’s family have appealed for any witnesses to the pursuit or the shooting to come forward.

“We are devastated; we need answers and we need accountability,” they said.

“We are worried that if Chris had not been black, he would have been arrested on Monday evening and not had his life cut short.”

The Metropolitan Police earlier expressed its condolences to Mr Kaba’s loved ones, saying the force understood that “the family and community want answers”.

Commander Alexis Boon said the incident was “extremely concerning” and vowed the force would co-operate with the police watchdog in its aftermath.

The officer said: “I would like to express my sincere condolences to the family and friends of the man who died and I recognise the devastating and lasting impact this tragic incident will have on them.

“I understand that this incident is extremely concerning and I would like to reassure the community that the Met is co-operating fully with the Independent Office for Police Conduct (IOPC) as they carry out a thorough and independent investigation.”

The shooting is being investigated by the IOPC, as is standard in deaths following police contact.

Speaking at the scene on Tuesday, Kim Alleyne, whose daughter Karimah Waite was engaged to Mr Kaba, said of him: “He was so loved. He was so funny. He was super kind. Crazy. He was always happy. He’d do anything for you.

“He was a fiance, he was due to get married in five months’ time. He’s got a baby on the way that he’s never going to see.

“It’s horrible and so shocking and so sad.”

Some paying tribute at the scene said Mr Kaba was a rapper known as Madix or Mad Itch 67.

Jefferson Bosela, who was Mr Kaba’s cousin, said: “He was a good person, a good, happy guy. He didn’t deserve that. No-one deserves that.

“Nobody deserves to be shot by the police, whether they are a good person or a bad person.”