Eyewitnesses yesterday described the dramatic scene as police swooped to arrest one of the men wanted for questioning over the murder of Pc Sharon Beshenivsky.
Plain-clothed officers from West Midlands Police descended on a three-bedroom terrace house in Saltley, east Birmingham in the early hours to arrest 19-year-old Yusuf Jama.
The teenager - sought alongside his brother Mustaf, aged 25, and Muzzaker Imtiaz Shah, 24 - is being quizzed by West Yorkshire detectives on suspicion of murder, the attempted murder of Pc Teresa Milburn and robbery.
But West Midlands Police confirmed last night that Jama was originally arrested yesterday in connection with an alleged serious sexual assault - not for the murder of Pc Beshenivsky.
He was detained along with nine other men in connection with an allegation of a sexual assault on a woman at a premises in Bowyer Road.
Nine of the men are in the custody of West Midlands Police in relation to the alleged attack. "The tenth man - identified after arrest as 19-year-old Yusuf Jama - has been transferred to the custody of West Yorkshire Police for questioning over the fatal shooting of Pc Sharon Beshenivsky," a West Midlands Police spokesman added.
The property where the arrests were made has been sealed off and is undergoing forensic examinations.
Pc Beshenivsky, aged 38, was gunned down as she and Pc Milburn, 37, went to investigate a robbery at a travel agents in Bradford eight days ago.
On Friday police released pictures of the three men they wanted to question over the shooting, all living in London.
Yesterday, shocked eyewitnesses told how they saw between four and eight people of Somali appearance being brought from a house, covered by blankets and handcuffed.
One resident in Bowyer Road said he and his son watched four men being led from the terrace house with their hands cuffed behind their backs by officers wearing flak jackets at 9.30am.
Another resident reported seeing at least two women being led away with their heads covered. Other witnesses saw as many as 15 police vans blocking the quiet one-way street.
Father-of-seven Mohammed Khan, 36, who has lived on the street for 33 years, said: "I saw one being brought out, a young lad about 18 or 19."
"That was about 9.45am. He was handcuffed. He was put into an unmarked Vauxhall by plain-clothed officers with flak jackets. They took him out of the house."
Pointing to a newspaper picture of Yusuf Jama, Mr Khan, a car factory worker, added: "My son definitely recognised him - he had seen him on the telly."
Mr Khan said the people in the property had been living their for about six weeks.
He said Jama was one of the men arrested. Another man was taken out 20 minutes later. Pc Milburn was released from hospital last Sunday after treatment for a gunshot wound to the shoulder. Pc Beshenivsky was a motherof-three; she also left two stepchildren.
Meanwhile, her husband agonised for a week over how to tell their youngest children of her death. Paul Beshenivsky, 42, finally decided to break the news to sevenyearold Paul and four-yearold Lydia when they returned home yesterday.
The youngsters had been staying with friends since their mother was gunned down last Friday, Lydia's birthday. Mr Beshenivsky said Lydia spotted hundreds of cards in the lounge and asked where her mother was.
He told the children their mother had gone to heaven. Lydia cried and asked: "Why did those bad men put mummy in the sky?"