Mexico offers rewards for information on missing students

The Mexican government has offered rewards for information on the whereabouts of 43 students who disappeared more than three weeks ago.

The 43 from a teacher training college in the town of Ayotzinapa went missing after deadly clashes with the police.
In newspaper advertisements the government said it would pay $110,000 (£68,000) for information on each one of the students.
Thirty-six police officers are being questioned over their disappearance.