Metro saw a 22 percent increase in the number of pockets picked and electronic devices snatched in 2012, as well as more homicides than the past four years combined, according to a report released by the transit agency.

The report shows that overall, serious crimes — which include assault, arson, car theft, rape and homicide, among others — dropped 3.3 percent from 2011 to 2012. But thefts of smartphones and other devices were up significantly, as were homicides.