Not later than July 1, 1990, the Division of State Police within the Department of Emergency Services and Public Protection and each municipal police department in the state shall establish a written policy or update its current policy with respect to the handling and processing of juvenile matters including, but not limited to, procedures concerning the arrest, referral, diversion and detention of juveniles. The Division of State Police and each municipal police department shall inform its police officers of such policy not later than July 1, 1990.