What was found
(CAN) ON THE INCOMING FLIGHT, PILOT NOTICED NR 1 ENG WAS 30 DEG C HIGHER. DURING OUTGOING FLIGHT, AFTER POSITIVE LIFT & GEAR UP, APPROX AT 670 FT, LOW OIL PRESS LIGHT CAME ON. PILOT LOWERED THE POWER LEVER TO FLIGHT IDLE. OBSERVED SHARP DROP IN OIL PRESS & CONFIRMED NR 1 ENG LOSS POWER. THEN FIRE WARNING ON THE CAP PANEL & LOCAL LIGHT ON CONDITION LEVER ILLUMINATED. PILOT ATTEMPTED MANUAL SHUTDOWN, FIRE WARNING PERSIST AFTER 10 SECS, PILOT DISCHARGED FIRE EXTINGUISHER. ACFT RETURNED TO DEPARTURE AIRPORT UNEVENTFULLY. TROUBLESHOOTING ONGOING.