Socata tobago pilot reported a near midair collision during arrival into toa airport.

Attributes
ACN	1371044
Time
Date	201607
Local Time Of Day	1201-1800
Place
Locale Reference	TOA.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Tobago TB-10
Operating Under FAR Part	Part 91
Flight Phase	Descent
Flight Plan	None
Person 1
Function	Instructor Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Commercial Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 3500 Flight Crew Type 2500
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 300 Vertical 300

Narrative:

On descent and just off the coast of manhattan beach contacted torrance tower for landing clearance. Was told of a twin that was on IFR flight plan that was in front of me and he was already talking to socal radar controllers. I advised I saw traffic. I then asked what direction he was heading. Torrance tower advised he was westbound. I kept watching the traffic and almost immediately saw he was not heading west now but turned north towards me. I advised torrance tower it looked like he was coming at me and I advised them I was maneuvering to avoid him. I banked hard right. I'd say the distance was within 300 feet.no further communication was made about the aircraft or if we were close etc. I landed without incident.

Original NASA ASRS Text

Title: Socata Tobago pilot reported a NMAC during arrival into TOA airport.

Narrative: On descent and just off the coast of Manhattan Beach contacted Torrance Tower for landing clearance. Was told of a twin that was on IFR flight plan that was in front of me and he was already talking to SoCal RADAR Controllers. I advised I saw traffic. I then asked what direction he was heading. Torrance Tower advised he was westbound. I kept watching the traffic and almost immediately saw he was not heading west now but turned north towards me. I advised Torrance Tower it looked like he was coming at me and I advised them I was maneuvering to avoid him. I banked hard right. I'd say the distance was within 300 feet.No further communication was made about the aircraft or if we were close etc. I landed without incident.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.