Three patients were transported to hospital in stable, serious and critical condition.
The City of Kelowna has declared a local state of emergency in response to the threat to people and property caused by the crane collapse.
A 250-foot radius surrounding the building has been evacuated, in case the rest of the crane were to collapse, MacIntosh said.
Kelowna RCMP said the block of Bernard Avenue/St. Paul St/Doyle Ave/ Bertram Street is now closed to the public until further notice.
“If you are in this area, please leave as soon as possible in a safe manner,” said Cpl. Jocelyn Noseworthy in an emailed statement.