Ten people have been arrested on suspicion of murdering a police officer killed while attending a reported burglary.

PC Andrew Harper, of Thames Valley Police, died at about 23:30 BST on Thursday in Berkshire.

The force said the 10 males arrested were aged between 13 and 30, and remain in custody.

Prime Minister Boris Johnson told the BBC the officer’s death was a “mindless and brutal crime”.

Police said PC Harper, who was from the Roads Policing Unit based in Abingdon, was “killed while performing his duties”, but have not confirmed any further details.

A cordon has been put in place at the scene near the A4 Bath Road between Reading and Newbury, at the crossroads near to Sulhamstead.

Mr Johnson said the officer’s death was “an absolute tragedy ” and “the most powerful reminder that police officers up and down the country put themselves at risk every single day to keep us safe”.

“My thoughts are with PC Harper’s family, friends and colleagues at this terrible time,” he added.

Deputy Chief Constable Jason Hogg said: “As a force we are devastated at the loss of our colleague and will all be supporting each other at this difficult time.”

Andy Fiddler, from the Thames Valley Police Federation, added: “This is totally devastating news.

“All our thoughts – and the thoughts of the entire police family across the UK – are with the family, friends and close colleagues of PC Andrew Harper who died last night.”

The Independent Office for Police Conduct (IOPC) said it had been made aware of the officer’s death, because of possible issues around a police pursuit, but is not investigating.

Andy Fiddler, from the Thames Valley Police Federation, added: “This is totally devastating news.

“All our thoughts – and the thoughts of the entire police family across the UK – are with the family, friends and close colleagues of PC Andrew Harper who died last night.”

The Independent Office for Police Conduct (IOPC) said it had been made aware of the officer’s death, because of possible issues around a police pursuit, but is not investigating.

public and his incredible bravery and extraordinary sacrifice will not be forgotten.”

Thames Valley Police said it was still trying to establish the circumstances in which PC Harper was killed.

Forensic investigators are at the scene, where two forensic tents have been put up.

Witnesses said officers were seen searching the inside of a grey BMW that was nearby.