A mother, father and son were injured, with the mother in critical condition, after a log ride malfunctioned at an amusement park in Riverside, California on Saturday, authorities said.
The incident occurred at around 4:47 p.m. at Castle Park amusement park in the 3500 block of Polk Street, Brian Guzzetta of the Riverside City Fire Department said.
The mother had facial injures that were not life threatening, Riverside police said.
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Castle Park said the ride's water pump experienced a mechanical failure.
The ride has been shut down, but the park remains open, Guzzetta said.
Castle Park said it is also investigating the cause of the incident.
"First and foremost--our thoughts and prayers are with the guests involved. Safety is our number one priority and we have begun conducting a full investigation."