The daughter of one of the world's most sought-after drug lords has been arrested on suspicion of trying to enter the United States on someone else's passport, US officials said.
Alejandrina Gisselle Guzman Salazar was arrested on Friday at San Diego's San Ysidro port of entry and charged with fraud and misuse of visas, permits and other documents.
Two US officials said that she told authorities her father was Joaquin 'El Chapo' Guzman, leader of Mexico's Sinaloa cartel.
A woman under that name has been charged in US federal court in San Diego. Kelly Thornton, a spokeswoman for the US lawyer's office, said she could not confirm that the woman charged was Guzman's daughter.
The complaint said Ms Guzman Salazar attempted to enter the country on foot, presenting a non-immigrant visa contained in a Mexican passport.
The arrest and investigation were being led by US Customs and Border Protection, which oversees the nation's largest border crossing in San Diego.
The Sinaloa cartel, named after the Pacific coast state of the same name, controls trafficking on the border with California and has in recent years successfully battled rivals to expand east and west along the 2,000-mile US-Mexico border.
The Los Angeles Times reported last year that Guzman's wife - former beauty queen Emma Coronel - travelled to Southern California and gave birth to twin girls at Antelope Valley Hospital in Lancaster, north of Los Angeles.
The newspaper said Ms Coronel, then 22, holds US citizenship, which entitles her to travel freely to the US and to use its hospitals.