A woman and two men were apparently bitten by a shark or sharks Wednesday morning off Haleiwa, according to city emergency personnel.

A city Emergency Medical Services spokeswoman said that just after 10:40 a.m., city paramedics and Ocean Safety personnel responded to three patients at Haleiwa Boat Harbor who were apparently bitten by a shark or sharks.

She said the three people were part of a tour group snorkeling when they were bitten.

A Hawaii resident, 24, had an injury to her right hand; a male visitor, 57, was treated for a right arm injury; and another visitor, 31, had an injury to his right shoulder, the spokeswoman said.

EMS treated all three patients on scene but they refused to go to an emergency room.