When Colorado legalized recreational marijuana, critics of the idea warned it would lead to more crime throughout the state. But the impact has been just the opposite so far in the state’s largest city, which has seen violent crime go down.

Crime data for Denver, the hub of legal pot sales in the state, shows murders, assaults, rapes, burglaries and other violent crimes declined during the first three months of the year, compared with the same period for 2013.

Homicides went down from 17 to 8 (a 53% drop), automobile break-ins from 2,317 to 1,477 (down 36%) and sexual assaults from 110 to 95 (down 14%). Overall, violent and property crimes dropped more than 10% from last year to this year during the first quarter.

Two types of property crime did go up—arson from 20 incidents to 47 (a 135% jump) and larceny from 2,133 to 2,287 (up 7%).

Meanwhile, marijuana sales across the state increased during the first three months of 2014, from $14 million to $19 million, according to Vox. “For all three months, Denver County made up about half that revenue,” German Lopez reported, noting the city is host to nearly 60% of Colorado’s licensed retail pot stores. Disappointed opponents of legal marijuana pointed out that there has been no connection shown between the drop in the crime rate and the increase in marijuana sales.

Some opponents say the criminal effect of decriminalizing marijuana won’t be felt for several years. “This is a great opportunity for us to find out what happens when you legalize a substance like marijuana,” Tom Gorman, director of Rocky Mountain High Intensity Drug Trafficking Area, told Vox before the police statistics came out. “Just wait and watch what happens in these labs, and then you can make a decision based on data and facts and not rhetoric.”

-Noel Brinkerhoff

To Learn More:

Part 1 Crime in the City and County of Denver Based on UCR Standards (City of Denver) (pdf)

Since Denver Legalized Pot Sales, Revenue Is Up and Crime Is Down (by German Lopez, Vox)

No Connection between Medical Marijuana and Increase in Crime (by Steve Straehley, AllGov)