Thailand murders: Two British men to be questioned
Police investigating the murders of two British tourists in Thailand have said two Britons are "possible suspects" and will face questioning.
Hannah Witheridge, 23, and David Miller, 24, were found dead on a beach on the island of Koh Tao on Monday.
Two British men who spent time with the victims in the days before they died are now in "police care" in Bangkok.
Police said the men had not been formally detained or arrested but had been prevented from leaving Thailand.
Jonathan Head reports.