Fresh appeal week on after officer seriously hurt

Checks for new information have been carried out at the scene of a crash in which a police officer suffered life-threatening injuries.
PC Christopher Miller, 38, has been in hospital since the incident on the B416 Bells Hill in Stoke Poges, Buckinghamshire on 22 May.
Thames Valley Police spoke to drivers one week on to ask if they had "recalled seeing anything".
Senior investigating officer, Det Supt Will Crowther, said: "I want to use this opportunity to continue to appeal to anyone who has information or footage from the area but is yet to contact the force to please come forward."
"The vehicle involved was a white BMW, which will have been damaged after the incident.
"We are keen to understand where the white BMW was before and after the incident, so if you saw the vehicle or anyone in the vehicle, please contact us.
"If you saw any other vehicles that caught your attention in the area that night, we would also be keen to hear from you.

Det Supt Crowther added that the force could be contacted anonymously through the independent charity Crimestoppers.
'Difficult time'
Deputy Chief Constable Ben Snuggs said: "Thames Valley Police has been shocked by the news of PC Christopher Miller being seriously injured while carrying out his duties as a police officer.
"PC Miller's family continue to be supported by our specially trained family liaison officers.
"Everyone within the force is thinking of PC Miller, his family and colleagues within our Roads Policing Unit.
"As a force, we continue to support each other through this difficult time."
Simranjit Kajla, 28, of Lydford Avenue, Slough, has been charged with attempted murder, causing serious injury by dangerous driving, driving while disqualified and using a motor vehicle on a road without insurance.
He appeared at Reading Magistrates' Court on Tuesday and was remanded in custody to appear at Reading Crown Court on 23 June.
Another man from Slough, 38, was arrested on suspicion of attempted murder and causing serious injury by dangerous driving and has been released on police bail until 23 August.
A man, 43, also from Slough, was arrested on suspicion of assisting an offender and perverting the course of justice but has been released under investigation.
A 37-year-old woman from Slough, arrested on suspicion of assisting an offender and perverting the course of justice, has been released on police bail until 25 August.