TRENTON - A law banning the import and export of parts of animals killed during trophy hunts went into effect in New Jersey.

The law comes in response to the killing of Cecil the Lion in Zimbabwe last year.

Gov. Chris Christie conditionally vetoed the bill earlier this month to ask for changes.

State Sen. Ray Lesniak, the bill’s sponsor, said that he helped to improve the bill, and thanked the governor for agreeing to protect endangered animals.

“Welcome to New Jersey, the humane state. First in the nation to ban ivory sales and second to ban trophy hunting,” Lesniak said.

The bill makes transporting trophy animal parts a third-degree crime.

Lawmakers say that Newark Liberty International Airport had been a hub for transporting these types of animal parts.