NEW YORK - Authorities in New York say five kayakers were injured when they were hit by a ferry departing a pier on the Hudson River.

Police say it happened just before 6 p.m. Tuesday near Pier 79 on Manhattan's west side as a group of 10 kayakers were paddling down the river.

One person is in stable condition with a serious arm injury. The others had minor injuries. Police originally said 11 were hurt.

Police say they were riding in eight kayaks. At least two kayaks were hit by the NY Waterway ferry.

Authorities are investigating whether the sun's glare was a factor.

Police say the ferry captain has tested negative for drugs and alcohol.

A spokesman for NY Waterway says it's cooperating with police and the Coast Guard on the investigation.