A flashlight vigil is scheduled for 7:30 p.m. to 8:30 p.m. Sunday to show support for an autism bill before the Legislature.

The vigil, which will be one of several vigils statewide, will take place at Ninth and Massachusetts streets.

The Legislature will consider House Bill 2367 when it reconvenes for the wrap-up session on April 29.

The measure would require insurers to cover the cost of treating autism.

Insurers say it will drive up premiums, but advocates for children say the growing number of states that have enacted such a requirement have experienced minimal premium increases, while the long-term costs are less because children who receive treatment become higher-functioning students and adults.