LARNED, Kan. (AP) — Kansas is among a number of states facing scrutiny over its program that commits sex offenders to involuntary treatment, which critics claim indefinitely warehouses them due to public safety concerns.

Program supporters argue it is necessary to keep dangerous offenders off the street, but some lawmakers have expressed concern as its costs and population balloon. A state audit report is due out Tuesday, comparing Kansas’ programs to those in 19 other states and the District of Columbia.

Republican Gov. Sam Brownback has recommended increasing its funding from $13.9 million in 2014 to $20.4 million by 2017 to accommodate its growing population.

The Department for Aging and Disability Services says the number of offenders confined under the program has grown to 258 since 1994 and only three have been released.