An unarmed black teenager whose killing by a white police officer has set off a week of protests and rioting in Ferguson, Missouri, was struck by at least six bullets, a lawyer for the deceased’s family said yesterday.

The path of one bullet indicates 18-year-old Michael Brown may have been lowering his head in surrender when the fatal shot hit, said Daryl Parks, the family’s lawyer.

Many details surrounding the shooting remain unclear, and federal and local officials have yet to release their own autopsy report.

Parks said the autopsy results clearly showed that the police officer who killed Brown should be arrested. He presented the results at a press conference showing that one bullet hit Brown in the “very top of his head” and another that struck his head exited near his eye.

“His head was in a downward position,” Parks said. “Given those kind of facts, this officer should have been arrested.”

The Brown family and protesters from around the United States have called for the officer’s arrest for days. But police have said only that 28-year-old Officer Darren Wilson was put on paid administrative leave after the August 9 shooting.

St Louis County Police spokesman Brian Schellman did not respond to a query about why the officer had not been arrested. The department is running a parallel investigation to one by the US Department of Justice, which is evaluating the shooting for civil rights violations.

The lack of an arrest, and the Ferguson police department’s reluctance to release details of the shooting have brought thousands of protesters to the streets of the St Louis suburb of Ferguson, whose population of about 21,000 is largely black.

Some rioting and looting has accompanied the protests. Missouri Governor Jay Nixon deployed National Guard troops to Ferguson on Monday to try to restore calm. He said there was to be no curfew in the St Louis suburb of Ferguson last night, two days after imposing one in an attempt to quell outbreaks of violence after Michael Brown was shot and killed.

“We will not use a curfew tonight,” Nixon said in a statement posted on his website, a few hours after he ordered the Missouri National Guard to “restore peace” to Ferguson.

The Brown family has called for peaceful demonstrations and an end to violence, and the police forces on the ground have been widely criticised for using excessive force on protesters.

The officer remains in hiding, and police say he has been threatened

Brown’s mother, Lesley McSpadden, spoke out yesterday in a televised interview with ABC’s Good Morning America programme. She said peace could be restored “with justice... arresting this man and making him accountable for his action.”

The private autopsy provides some answers, but not all, the family’s lawyers said. They said Brown’s body did not show any signs that he had struggled with the officer and that there was no gunshot residue on the body, indicating Brown was probably at least a few feet away from the gun when he was shot.

The lawyers said they did not yet have access to clothing that might show gunshot residue, X-rays taken when the county did the first autopsy on Brown’s body, or toxicology results, which the county has thus far not released.

Police have given few details of the police officer’s version of events. The officer remains in hiding, and police say he has been threatened.

What police have said so far is that Brown and a friend were walking down the middle of a road that runs between a handful of apartment buildings shortly after noon when Wilson asked the two to move off the narrow road and onto a sidewalk.

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