The Georgia-based operator of the amphibious boat involved in Wednesday's fatal accident in Philadelphia has suspended operations of the boats at several other sites across the country, including at Stone Mountain.
Ride the Ducks, a division of Norcross-based Herschend Family Entertainment, also operates the tourist boats in San Francisco, Seattle, Branson, Mo., and Newport, Ky.
"Our thoughts and prayers are with our Philadelphia guests, crew members and their families," a note on the Stone Mountain Web site read. "We are attending to their needs first. In the interim, we have voluntarily suspended our Ride the Ducks operations nationwide."
The company said that those with reservations on the boats can receive refunds or reschedule their trips for a later date.
Ride the Ducks has operated boats at Stone Mountain Park since 2004, a park spokeswoman said.
One of the company's boats, which operate on both land and water, collided with a barge on the Delaware River in Philadelphia on Wednesday.
Police and Coast Guard officials are still searching for two people, a 16-year-old girl and a 20-year-old man, members of a Hungarian tour group. Others in the group suffered minor injuries.