Thai murder: Head teacher's tribute to former pupil Hannah Witheridge

Police investigating the deaths of two Britons in Thailand say they are looking for a number of suspects - but have ruled out other British tourists.

Hannah Witheridge, 23, and David Miller, 24, were found dead on a beach in Koh Tao on Monday, having suffered serious injuries in an attack.

Richard Denny, head teacher at Martham Primary School in Norfolk, said the news of former pupil Hannah's death had stunned the school.

"She really took part in the life of the school."