Twenty-two Carnival Cruise Lines passengers were robbed of valuables and their passports during a shore excursion in the Mexico seaside resort of Puerto Vallarta, cruise officials said late Saturday.

The passengers were robbed Thursday during a guided trail excursion, according to a statement released by the cruise line.

The cruise line did not provide details of the robbery, saying only that there were no injuries and the tour was suspended on future sailings under further notice.