CHICAGO (CBS) — Two skydivers collided mid-air near Ottawa Tuesday morning, knocking one of the skydivers unconscious, according to Skydive Chicago.

The incident happened at about 11:00 a.m., and a licensed skydiver was knocked unconscious.

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Officials say his automatic activation device was activated and deployed his parachute.

Both jumpers were sent to OSF St. Elizabeth Medical Center, according to the Ottawa Fire Department.

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One came down right at Skydive Chicago, and the other landed in the Fox River just north of the Dayton dam near a hydroelectric plant, fire officials said.

Both are now conscious and alert, they say, with relatively minor injuries.

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A skydiver was killed at Skydive Chicago in Ottawa last year after his parachute failed to deploy.