A new law was signed in Nassau County Tuesday, effectively putting adults who allow underage drinking in their homes on notice.

Nassau County Executive Tom Suozzi signed the Social Host Law. Under the bill, adults caught with underage drinkers in their home will be given a $250 fine. A second offense will net a $500 fine, and a third offense could mean a $1,000 fine and up to one year in jail.

Legislator David Mejias (D-North Massapequa) is a strong supporter of the bill. He says parents will now be held accountable. Mejias says the new law gives police another tool to combat a growing problem that kills.

Suozzi says police will target homes that have habitual parties. The law excludes adults who give minors alcohol for religious reasons.