This has caused tensions between the two sides, especially over the issue of Spanish fishermen operating in British Gibraltar territorial waters. Both have signed, and are bound, by the United Nations Convention on the Law of the Sea which specifies territorial waters. After the arrest of a Spanish fishing vessel by the Royal Gibraltar Police in 1998, the problem largely subsided. An incident in the area in 2007 concerning the Odyssey Marine Exploration was resolved in court cases by 2012 with Spain being awarded the ownership of the treasure-trove.<br><br><br><br><br><br><br><br><br>