Panama has declared an emergency in its main banana-producing region, after shops were looted and buildings vandalised in ongoing protests over a pension reform.

The government says constitutional rights will be suspended for the next five days in the north-western Bocas del Toro province.

The measure restricts freedom of movement and allows the police to make arrests without a warrant.

Troubles in the region began a month ago, when the local banana workers union joined a nationwide protest against proposed pension cuts and declared a strike.