The son of imprisoned drug lord Joaquin 'El Chapo' Guzman is believed to have been kidnapped from a restaurant in the tourist resort of Puerto Vallarta.
Ivan Guzman was abducted along with six other men by a squad of armed assailants, Attorney General Eduardo Almaguer has told local media in the Mexican state of Jalisco.
Police believe the men may have been taken by one of the most powerful drug gangs in Mexico.
Ivan Guzman took over control of his father's Sinaloa cartel when 'El Chapo' was re-arrested in January.
Local authorities say the victims were seized around 1am (local time) on Monday morning from a restaurant in the resort town.
Mr Almaguer said the suspected gang members were accompanied by nine women who were left behind, adding that the kidnappers had yet to make any contact with authorities.
Puerto Vallarta, in the state of Jalisco, is one of Mexico's top holiday destinations, luring all-inclusive tourists and high-end sunseekers to its beaches.
Jalisco, which lies south along the Pacific coast from Sinaloa, is also home to the Jalisco New Generation cartel, which has become one of the country's most powerful drug gangs in recent years.
In a statement, the prosecutor's office said it was investigating the incident, while Almaguer said he was trying to fully identify the men who were abducted.
Reuters / Newshub.