TRIBUTES have been rolling in on social media for the police officer killed on duty.

PC Andrew Harper was 'murdered' responding to a reported burglary near Reading. 

Ten have been arrested between the ages of 13 and 30 on suspicion of murder of the Abingdon-based officer. 

Here's what we know so far

The new Prime Minister has released a statement on Twitter saying: "I am deeply shocked and appalled by the death of a brave officer on duty in Thames Valley last night. My thoughts are with PC Harper’s family, friends and colleagues at this terrible time."

Police and crime commissioner Anthony Stansfeld said: "I would like to offer my deepest condolences to the family, friends and colleagues of PC Andrew Harper. This is a tragic loss for the force and I know that Thames Valley Police are doing all they can to support those who have been affected." 

His deputy Matthew Barber said the tragedy will appal the public across the country. 

Craig O'Leary the chair of the Thames Valley Police federation said words can't describe the sorrow. 

With the federation itself adding on Facebook: "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 Harper who died last night.

"Police officers go to work each and every day to do their duty. We are courageous, caring and compassionate. We confront danger on a daily basis. We know there is a risk when we put on the uniform but we do so as we are proud to protect the public.

"Sadly on very rare and horrendous occasions a colleague makes the ultimate sacrifice. We will ensure that heroism is never forgotten.

"We are offering our full support to the officer’s family and colleagues at this simply awful time."

It comes days after the federation spoke out about officers being assaulted on the frontline.

Others to speak out include Priti Patel, the new Home Secretary.