Hollow-point bullets and other ammunition designed to cause extreme damage could soon be banned in San Francisco.

Mayor Ed Lee, Supervisor Malia Cohen and police Chief Greg Suhr said on Thursday that high-powered, military-style weapons and ammunition have no place in the city.

The San Francisco Chronicle says Cohen will introduce legislation next month that would ban hollow-point bullets and other ammunition meant to cause extreme damage. The law will also require that sellers notify police when more than 500 rounds of ammunition are being purchased.

The announcement comes a week after the shootings of 20 children and six adults at a Connecticut school.

An earlier San Francisco plan to ban automatic weapons was thwarted by the court. The mayor says the latest proposal will likely face legal challenges.