Jeremy Corbyn 'totally shocked' by death of police officer in Berkshire
Labour leader Jeremy Corbyn says he is "totally shocked" to hear news of the death of Pc Andrew Harper of Thames Valley Police.
Pc Harper was killed as he attended a reported burglary in Berkshire on Thursday evening.
Ten males aged between 13 and 30 have been arrested on suspicion of murder and remain in custody at police stations across the Thames Valley, the force said.
The incident happened at the crossroads of Ufton Lane and Lambdens Hill, near the village of Sulhamstead.