A 16th medical negligence complaint has been filed against an Oklahoma City surgeon who made international headlines after performing a risky operation in 2006 that left a Russian teen brain dead.

Plaintiff James Lamle filed the complaint Tuesday in Oklahoma County District Court against surgeon Paul Christopher Francel, records show. It appears Lamle is representing himself in the case.

Tuesday's complaint was at least the 14th filed against Francel since January.

Francel agreed in December not to practice medicine while under investigation by state medical officials.

The Oklahoma Board of Medical Licensure and Supervision will not say if the investigation stems from the Russian boy's death or other matters.

A phone call to Francel's attorney was not immediately returned Wednesday morning.