MOREAU, N.Y. — Drones, bloodhounds and an airboat were used in the search for a missing 9-year-old girl who had been camping with her family in upstate New York, officials said Sunday.

Charlotte Sena was last seen on Saturday evening in Moreau Lake State Park, about 35 miles north of Albany. She had been riding her bike around a loop in the bucolic park with other children when she decided to ride around one more time by herself. Her parents became alarmed when the fourth grader failed to come back after 15 minutes, Gov. Kathy Hochul said at a briefing Sunday.

The girl’s mother called 911 after her bicycle was found about 6:45 p.m. Saturday.

Officials issued an Amber Alert on Sunday morning after an exhaustive search because “it was quite possible that an abduction had taken place,” state police Lt. Colonel Richard Mazzone said.

The more than 100 searchers on Sunday included police, forest rangers and civilians.

“We are leaving no stone, no branch, no table, no cabin unturned, untouched, unexamined in our search to find Charlotte,” said Hochul, who described her as a “joyful” girl who was recently elected a class officer for student council.

The girl, a resident of nearby Greenfield, was last seen wearing an orange tie-dye Pokemon shirt, dark blue pants, black Crocs and a grey bike helmet.