CHICAGO (CBS) — Two people on a WaveRunner fell into the Chicago River and were rescued by an architecture tour boat Saturday afternoon.

Police say the CPD Marine Unit responded around 2:30 p.m. to a call about two people who had fallen off a WaveRunner just west of the Chicago Lock.

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A spokesperson for Wendella, a company that runs boat tours along the river, says the water vehicle was carrying two people and flipped over. Wendella employees used a ladder to pull the people out of the water and dropped them off at a CPD Marine Safety Station.

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No one was injured. Both of the people were reported to be wearing life vests.

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Wendella said, on average, they make rescues like this once or twice a month.