Steve Whitmore, a spokesman for the Los Angeles County Sheriff's Department, said the incident allegedly occurred outside a Mexican restaurant Friday night.
He said the 54-year-old former James Bond star was not arrested or detained.
Messages left Tuesday for Brosnan's publicist, Jennifer Allen, were not immediately returned.
Whitmore identified the alleged victim as Robert Rosen, but declined to give more details because the investigation is ongoing.
Rosen could not be reached for comment.
Russia has been developing an energy module on the basis of the megawatt-class nuclear power plant since 2010. The spaceship needs neither sunlight nor solar batteries
There are legitimate authorities in Donetsk and Luhansk republics now, with which Russia can implement the project of the economic integration of the Donbass
Austria does not intend to expel Russian diplomats because of the spy scandal