A NUMBER of arrests were made today (Tuesday, September 17) in connection with the death of PC Andrew Harper.

During a series of warrants carried out by more than 100 officers in Berkshire and Hampshire, Thames Valley Police officers re-arrested three people in connection with the incident, which occurred on Thursday, August 15 at the crossroads of Ufton Lane and Lambdens Hill, near Sulhamstead.

READ MORE: Reading's anonymous tribute to PC Andrew Harper

The three people, who are all male, were originally arrested on Friday, August 16.

They were then released on bail until Thursday, September 12 and were then re-bailed until November 16.

They are an 18-year-old man and two17-year-old boys, all from the Reading area.

READ MORE: Nine re-bailed in connection with Andrew Harper death

Today, they have been re-arrested along with a 21-year-old man from Basingstoke, who has been arrested for the first time in connection with this investigation.

They are all currently in police custody.

Jed Foster, 20, of Pingewood, Burghfield, Reading was charged on August 19 with one count of murder and one count of theft.

He appeared at Reading Crown Court on Wednesday, 21 August and has been remanded in custody.

Detective Superintendent Ailsa Kent, of the Thames Valley Police Major Crime Unit, said: "We are continuing to investigate the death of our colleague PC Andrew Harper, and today we have re-arrested three people in connection with this.

"In addition to these re-arrests, we have also arrested a further suspect, a 21-year-old man from Basingstoke.

"All four have been arrested on suspicion of murder and theft and are in our custody.

"This follows new evidence coming to light as the investigation has progressed in recent weeks.

"Members of the public might see an increased police presence at the locations of these warrants today.

"We appreciate the public’s patience and support while we progress these critical lines of enquiry.

"This is an ongoing, complex investigation, and we remain committed to achieving justice for PC Harper, his family, friends and colleagues.

"I would also like to reiterate our appeal for anyone who knows anything about this incident to come forward and talk to police, if you have not already done so.

"Anyone with any information, no matter how insignificant it may seem, should call the Thames Valley Police non-emergency number on 101."

If you would like to make a report anonymously, you can do so online or by calling Crimestoppers on 0800 555 111.