Officials say US travelers in certain regions of Mexico should continue to shelter in place on Monday, and airlines have canceled and rescheduled flights.

Cartel violence has erupted around Mexico, leading to flight disruptions.

U.S. citizens are being urged to shelter in place amid unrest in Puerto Vallarta.

Explosions, roadblocks and gunfire have been reported throughout the state, after law enforcement actions on Sunday morning.

Smoke filled the sky above the swanky beach town of Puerto Vallarta, Mexico, as shops and cars were set ablaze by cartel members after the government killed a major drug kingpin Sunday, leaving tourists and residents cowering in fear.

The U.S. Embassy and Consulates in Mexico issued a security alert affecting Puerto Vallarta, Tijuana and more.

Airlines have temporarily suspended flights to Puerto Vallarta due to a security situation following the death of drug lord 'El Mencho.'

Two private jets and an 11-hour transatlantic journey from Madrid were among the flights that diverted due to cartel violence in Mexico.