MEXICO CITY: At least 12 people were killed, including a teenager, and more wounded in a Tuesday night shooting in the central Mexican city of Irapuato, authorities said on Wednesday.

The attorney general’s office in Guanajuato, the violence-plagued state where Irapuato is located, said some 20 others were hospitalized with gunshot wounds.

Mexican President Claudia Sheinbaum said earlier on Wednesday that the victims included children, although the attorney general’s office later confirmed only one casualty was a minor, aged 17.

“It is very unfortunate what happened. An investigation is under way,” Sheinbaum said.

Local media reported the shooting happened during an evening party celebrating a Catholic holiday, the Nativity of John the Baptist.