Authorities in Juarez have closed ten unregistered drug rehabilitation centers following a pair of shootings that left 28 people dead.

The shootings took place at two of the rehab locations, and a spokesman from the office of the Juarez mayor says there is evidence drug cartels are recruiting members from unregulated centers.

The spokesman adds that some of these centers are grounds for cartel-related activity.

However, drug rehabilitation professionals assert that shutting down the centers may contribute to an increase in substance abuse.

Officials say they will continue to crack down and close rehab centers that violate the rules.