Having a ghost gun is now illegal in the city of San Diego. The city's ghost gun ordinance took effect Saturday banning San Diegans from owning, purchasing, and transporting firearms without serial numbers.

Marni Von Wilpert said an incident in April where a man shot and killed one person and injured four at the Gaslamp District is the reason she authored this law.

She authored and introduced the ENUF ordinance which was approved by the city council on Sept. 14 then signed into law on Sept. 30 by Mayor Todd Gloria.

"[Police have] seen over a 169% increase. They are confiscating on the street double the number from last year. We’re seeing our rising gun violence in our communities more and more often these crimes are committed by people with ghost guns," said Von Wilpert.

To read more of Regina Ahn's article,  please click here, Ghost gun ban in city of San Diego goes into effect (msn.com)