A teenage boy was one of a number of people held at gunpoint during an "incredibly traumatic" armed robbery in Lambeth, south London, recently.
Police described the incident as an "incredibly traumatic experience".
The burglary took place at an estate along Lansdowne Way in Lambeth on the evening of Sunday 18 April.
At around 5.30pm, a 17-year-old boy answered a knock on the door to a stranger who, along with two other men, forcibly entered his home without permission.
"All were armed with weapons including a firearm and knife.
"The young boy was held at the address for around three hours alongside four other occupants, all threatened at gunpoint," a police statement described.
"The suspects then made off to the car park outside the address on an estate along Lansdowne Way, SW8 where they rummaged through the victim’s car," it continued.
The terrifying burglary lasted over three hours, police said, ending at 9pm when the suspects ran off down Lansdowne Way.
A total of £1,000 in cash and multiple high value personal possessions were stolen and taken away in two Nike backpacks.
The victims and their families are being supported by specially trained officers from the Met Police, while a description of the suspects was also included in the police appeal, available here
As the Met appealed for information, Detective Constable Will Wigzell, of the Burglary and Robbery Investigation Team, said:
"The offence timings in this case are very narrow and we believe witnesses would have seen the suspects fleeing between 20:50 and 21:05 on Sunday, 18 April.
"I urge anyone who was in SW8 postal code, specifically Lansdowne Way, Wandsworth Road, or Priory Park areas, to please come forward if they saw three males acting suspiciously, or any vehicle being driven in a dangerous or reckless manner.
"I am asking anyone who was in or lives within this area, to review CCTV or dash cam footage that may show the suspects making off.
"This was an incredibly traumatic experience for the young victim and all those involved, which could have resulted in a far worse outcome.
"This is a serious offence involving the production of a firearm. Whilst offences like this are rare, those committing them represent the very worst of our society and it is vitally important we find those responsible, to hold them accountable for their actions and give justice to the victims."
Detectives are working tirelessly to establish the circumstances and I am urging anyone with information, dash cam footage, or residential CCTV that may be relevant, to contact 101 quoting CAD is 6823/18APR."