WRIGHTSVILLE, Pa. (AP) — Rescue crews in central Pennsylvania have been searching for a man missing in the Susquehanna River.

Authorities say the 35-year-old Lancaster man fell into the river Tuesday night as he was trying to dock a boat at the Long Level Marina in Wrightsville, York County.

Officials say others on the boat tried to rescue him, but he floated downstream and went under. Duane Hagelgans of Blue Rock Fire Rescue told WGAL-TV that if the victim had been wearing a life vest, he would have been floating and could have been rescued quickly.

At last eight boats searched Tuesday night using night vision cameras. The volunteer crews from York and Lancaster counties ended their search after 1 a.m. Wednesday, planning to resume later in the morning.