Chicago's top cop talks with ABC News' Pierre Thomas about crime-fighting efforts in the city

CHICAGO (WLS) -- October marks the seventh straight month that Chicago police say homicides have decreased in the city.

Police also report shootings are down with nearly 2,200 so far this year compared to more than 2,700 last year.

MORE: Chicago Crime

ABC News Chief Justice Correspondent Pierre Thomas recently spent time with Chicago's top cop, Superintendent David Brown, talking about the crime-fighting efforts in the city and the superintendent said he's encouraged by the decrease but added that there's more work to do.