As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING TAKEOFF CLIMB, SMOKE WAS OBSERVED IN THE CABIN AND FLIGHTDECK. THE CREW DECLARED AN EMERGENCY AND RETURNED TO POINT-OF-DEPARTURE WITH ENGINE BLEEDS SELECTED (OFF). SUBSEQUENT INSPECTION REVEALED ENGINE INTERNAL OIL LEAKAGE. MFG WILL INVESTIGATE THE INCIDENT AND WILL ADVISE OF ROOT CAUSE, ONCE DETERMINED.