NASHVILLE (AP) — Gov. Bill Haslam has signed legislation that requires all of Tennessee's law enforcement agencies to adopt written policies to ban racial profiling.

The Republican governor signed the measure earlier this week. It unanimously passed the House 93-0 and was approved 27-0 in the Senate during the recent session.

Supporters say the measure is in response to a series of incidents involving white police officers killing unarmed black men over the last year.

Previous efforts to require racial profiling policies fell short in the Legislature over the years.

Lawmakers in 2005 ordered a comptroller's study on the role of ethnicity in traffic stops by the Tennessee Highway Patrol.