BROWNSBURG, Ind. (AP) — Hundreds of people gathered at a vigil in suburban Indianapolis to remember four teenagers killed in a car accident last week.

They commemorated the teens and shared their grief Sunday night in the parking lot of Brownsburg High School. Mourners lit candles and released a bouquet of purple and white balloons, the school's colors.

Seventeen-year-old Mathew Howard Chambers, 18-year-old Lucas Edwin Kenworthy, 17-year-old Noah James Tex and 17-year-old Riley Davis Hurst died when their car crossed a state highway median and struck a minivan around 7 p.m. Wednesday.

All four were from Brownsburg, a western Indianapolis suburb. Another passenger in their car, as well as a family of four in a minivan, were treated for injuries.

The cause of the accident remains under investigation.