TRENTON - New Jersey is buying 1,000 body cameras to equip all its state troopers who are out on the road and also announcing policies for local police on how the cameras should be used by all police in the state.

Acting Attorney General John Hoffman announced details Tuesday.

The devices are to be bought in batches over the next year. The cameras and computer upgrades have a price tag of $1.5 million.

Aseltine said the state also plans to use $2.5 million in forfeiture funds to help local police buy cameras.

Police cameras have been growing in use, particularly amid calls from civil liberties advocates after high-profile police shootings, including last year in Ferguson, Missouri.

New Jersey is among the first states with plans to put them on all state troopers.