A security operation in Mexico's Sinaloa state during ​the weekend left 10 assailants ‌dead and three others arrested after an explosive device attack on naval personnel ​carrying out flood-monitoring work, ​Mexico's navy said on Monday.

The ⁠10 attackers were killed after ​security forces repelled a second assault ​in El Rosario municipality, the navy said in a statement.

Three sailors were wounded ​in the initial attack; one ​died and two are out of danger, ‌authorities ⁠said.

Naval personnel were monitoring rivers and dams for sudden rises in water levels to alert communities ​ahead of ​the ⁠rainy season when they were ambushed.

The three detained ​suspects were handed to ​prosecutors ⁠to open a formal investigation, the navy said.

The operation took place ⁠amid ​a major reinforcement ​of state security.

-Reuters