4 March 2012 Last updated at 05:07 ET

Cayman Islands missing man Nathan Clarke: Hundreds search

Mr Clarke has been missing since Saturday evening

More than 560 people have joined a search for a Gloucestershire man who has gone missing in the Cayman Islands.

Nathan Clarke, 30, from Cheltenham, was last seen a week ago on Grand Cayman. His phone was later found in the sea.

A water search along the Seven Mile Beach area began on Saturday with 527 volunteers and 39 police officers joining the hunt.

Mr Clarke's parents arrived on the island on Saturday to join the search for their son.

The Royal Cayman Islands Police Service (RCIPS) said Mr Clarke's parents were being kept "fully updated and informed" about the investigation.

Ch Insp Richard Barrow of RCIPS said the police force was working "tirelessly" to find Mr Clarke.

"Our search coordinators have been overwhelmed by the determination of those involved not to give up," he added.

The search was due to resume on Sunday morning local time and police appealed for more volunteers to come forward.

Mr Clarke works as a teaching assistant on Grand Cayman and has lived there for about four years.

He was last seen near Calico Jack's beach bar on West Bay Road on the Caribbean island wearing swimming shorts.

A campaign has also been launched on Facebook to help raise awareness and funds.