LAWRENCE, Ind. -- A fatal crash involving an allegedly stolen minivan has prompted city police to seek an ordinance that would make it illegal to leave vehicles running and unattended.

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Slideshow: How Crash Happened

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Lawrence Police Officer Craig Herbert, 34, died after a minivan struck his patrol car during a high-speed chase Saturday night. Police said the minivan had been stolen while it was left unlocked and unattended with the keys inside.

On Monday night, the leader of the local Fraternal Order of Police asked the city council to consider the ordinance.

"In the past 120 days in the city of Lawrence, we've had 70 vehicles stolen. Out of the 70 vehicles, 35 had been left running ... unlocked," Officer Tom Ashcraft said during a council meeting.

Saturday's crash won't be the only example used by police. On Tuesday morning, another vehicle theft prompted a police chase that started in Lawrence and ended with an arrest on Indianapolis' east side. The vehicle, police said, was stolen after its owner left the car running outside his home.

"Even though the people leaving their cars running ... may not be directly responsible for any damage or harm to any person or property later, there is certainly some contributory negligence there," Lawrence Police Capt. Don Deputy told RTV6's Julie Pursley on Tuesday.

Mayor Deborah Cantwell said at Monday's council meeting that she supports the ordinance proposal.

"The death of Officer Herbert, though not justified, needs to serve as a catalyst for conversation, collaborative efforts and solutions to making our city safer for everybody," Cantwell told the council.

The FOP said it will research the issue with the city and draft an ordinance. It wants to present the proposal to the council within the next 30 days, Pursley reported.

"We're just trying to save lives. That's our job," Ashcraft said Tuesday.

Teens Face Charges In Connection With Officer's Death

Prosecutors were expected to file charges Tuesday against two teenagers who police say were in the minivan that crashed into Herbert's car.

The teens, both 15-year-old males, were arrested at the scene of the crash, which happened at the intersection of 46th Street and Franklin Road.

Herbert's funeral is scheduled for 10 a.m. Friday in Calvary Temple of Indianapolis, 2901 N. Post Road. Visitation will be held there Thursday from 2 to 8 p.m.

Herbert is survived by a wife and two sons.

A trust fund has been established for the boys. Donations can be made to the Children of Patrolman Herbert fund at the Indiana Members Credit Union.