Mexico City: The Mexican Navy stepped up patrols off the Pacific coast resort of Cabo San Lucas after a group of US and European tourists camping on an island were robbed and left stranded.
Navy forces will also carry out patrols on beaches themselves in Baja California state, the Navy said in a statement.
On Wednesday authorities found a boat that was stolen March 14 from the tourists on a nature reserve island.
Three armed attackers arrived on the island as some 25 tourists were camping and robbed them of cash, cameras, cell phones and their passports, said Adonai Carreon, a prosecutor.
To avoid being followed the thieves also stole a boat -- the one found Wednesday -- and the keys to two others on which the tourists had made it to the island just off the coast.
The tourists were British, German, American and Spanish, Carreon said.