160Want local news?Sign up for the Localist and stay informed Something went wrong. Please try again.subscribeCongratulations! You’re all set! Six months after the violent May Day confrontation between LAPD officers and hundreds of immigration protesters, internal affairs investigators told a skeptical Police Commission today they have identified most of the officers who used excessive force that day and expect to start discipline proceedings by next year. Deputy Chief Mike Perez, who is overseeing the internal investigation, would not reveal how many officers or supervisors have been singled out for discipline but said 48 officers have been interviewed. “We have a good idea of which officers used force,” he said. “Our problem is matching officers who used force with complaints.” More than 300 complaints were filed over officer behavior that day, including 27 from members of the media. AD Quality Auto 360p 720p 1080p Top articles1/5READ MOREGame Center: Chargers at Kansas City Chiefs, Sunday, 10 a.m.“Since there was nothing distinctive about the officers that day – all the officers pretty much look the same to the public – citizens have only been able to aid in identification of a few officers,” Perez said. But after more than 6,000 hours of investigations and several hearings, commissioners voiced frustration, saying there should be enough evidence to discipline officers involved in the high-profile beatings captured on tape. “It seems like the overall investigation is complex,” Commissioner Shelley Freeman said. But “some of them strike me as no-brainers frankly, and I am wondering why we wouldn’t prioritize some of the simple ones.” For more on this story, read Wednesday’s Daily News.