Spanish fishing boats in Gibraltar reef protest
18 August 2013 Last updated at 19:13 BST
Spanish fishermen have sailed into disputed waters off Gibraltar in protest at a reef put there by the British territory's government.
The fishermen say the reef restricts their right to fish, but Gibraltar says they should not be fishing there. The row over the reef has led to tensions between the UK, Gibraltar and Spain in recent weeks.
Gibraltar police said the protest lasted an hour and passed off without incident.
Tom Burridge reports from the Gibraltar-Spain border.