SAN DIEGO (Border Report) — The U.S. Embassy in Mexico City is warning Americans about possible increased confrontations between rival criminal organizations in Tijuana and Rosarito Beach.

And U.S. citizens are being told to expect a wider Mexican law enforcement presence due to the arrest of a prominent drug cartel leader over the weekend.

A news release issued by the U.S. Consulate in Tijuana says “criminal organization assassinations and territorial disputes can result in bystanders being injured or killed.”

The consulate has issued a Level 3 warning, which means travelers should reconsider travel to northwest Baja California due to crime and kidnappings.