Newtown Connecticut

ANNAPOLIS, Md. (AP) - Opponents of a new gun-control measure in Maryland have filed a lawsuit to block the legislation from taking effect.

The lawsuit was filed in U.S. District Court in Maryland on Thursday and seeks to stop the law from taking effect on Oct. 1. Maryland Gov. Martin O'Malley signed the new law in May. It gives the state some of the nation's tightest gun laws.

BALTIMORE (AP) - Maryland Attorney General Doug Gansler is hosting a forum on gun violence in Maryland.

It's scheduled for Monday at the the University of Maryland Francis King Carey School in Baltimore.

The forum will bring state and local community leaders together, as well as law enforcement officers, prosecutors, legal scholars and gun violence experts.

They will talk about challenges and practical solutions to keep illegal guns off the street.