In the video obtained by Sky News, a gunshot can be heard and a dark car is seen driving down Phoenix Road, near Euston Station.

Following the bang, people can be heard screaming and are seen running away.

Six people, including a seven-year-old girl who remains in a critical condition, were injured in the drive-by shooting outside St Aloysius Church on Saturday afternoon. The CCTV footage was captured from Wellbeing Walk, an alleyway near the church.

Police have yet to make any arrests and have appealed for information as they continue to hunt for the gunman.

Officers believe the suspects fired a shotgun at mourners from a black Toyota at about 1.30pm, before driving away from the scene. Officers are searching for a 2019 model black Toyota C-HR.

The seven-year-old girl injured in the attack remains in a stable but critical condition, while a 48-year-old woman suffered potentially life-changing injuries.

A 12-year-old girl and three other women aged 21, 41 and 54 were also injured in the attack.

The 12-year-old suffered leg injuries but has since been discharged from hospital and is expected to make a full recovery.

The shooting took place after a requiem mass was held in memory of 20-year-old Sara Sanchez and her mother, Fresia Calderon, who died within a month of one another in November.

Ms Sanchez died following a battle with leukaemia, while her mother Ms Calderon died suddenly from a rare blood clot after travelling into Heathrow Airport from Colombia, MyLondon reported.

Father Jeremy Trood, the priest who conducted the service before the shooting took place, described the scenes as "pandemonium".

He told Sky News he heard a loud gunshot shortly after mourners left the church to release doves outside before people started rushing back into the building.

Superintendent Jack Rowlands, from the Metropolitan Police, described the incident as a "senseless act of violence" as the hunt for the gunman continued on Sunday.

People who attended the memorial service at the church in Phoenix Road told Sky News they do not know why it happened.

Those who knew the mother and daughter who died said those hurt in the incident were attending the service in their memory.

'Your information could be vitally important'

Superintendent Rowlands said officers arrived at the scene to find "multiple people with injuries caused by pellets fired from a shotgun".

Appealing for information, he continued: "The incident took place as mourners gathered outside the church following a funeral.

"We believe the suspects discharged a shotgun from a moving vehicle, which was a black Toyota C-HR, likely a 2019 model or similar.

"This was a shocking incident. People came here to attend a funeral, to be with friends and loved ones and to mourn together. Instead they were the victims of a senseless act of violence...

"I can promise that we are doing everything we can to identify and bring to justice those who were responsible for this attack.

"The investigation is being led by the Met's specialist crime command. We have a significant number of specialist detectives and local officers working around the clock, but we also need the public's help.

"We want to hear from anyone who witnessed the incident or who has any information about it. Your information could be vitally important, no matter how insignificant you think it may be."