CLEVELAND -- Investigators Monday released a 911 call made just after a Pennsylvania doctor was shot and killed along the Ohio Turnpike in Broadview Heights.

Video

Turnpike 911 Call

The person who robbed and killed Dr. Gulam Moonda Friday evening is still on the loose.

Moonda, his wife and mother-in-law had just pulled off to the side of the road to change drivers when the gunman pulled up and demanded money.

Officers say the gunman shot Moonda after the victim had handed over his wallet.

Police say the person that sped away in what they believe to be a dark-colored minivan.

SLIDESHOW: Doctor Shot In Head On Turnpike

NewsChannel5's John Kosich reported that there is technology available that could have helped find the person responsible sooner.

A turnpike is the only type of highway where every driver is forced to come in contact with a person at a tollbooth.

Many states have cameras at these places that have helped police catch killers.

But there are no such cameras at Ohio's toll plazas.

The turnpike's executive director told NewsChannel5 that the Turnpike Commission has extensive security measures in place to protect toll workers, but the cameras are something they have not considered and are not considering for the future.

Although many other states also don't use cameras, the states that do have them in place have found them to be helpful.

In Pennsylvania, there was a case where a man murdered his wife, wrapped the body in a tarp, put it in his pickup truck and drove off to bury her.

But he took the Pennsylvania Turnpike, so he and his truck were caught on tape.

Another tool that has proven helpful to law enforcement tracking suspects is the E-Z Pass, a system that electronically deducts tolls from a prepaid account.

Ohio doesn't utilize this system, either.

The Ohio State Highway Patrol believes there's someone out there that can help them catch Moonda's killer.

People who may have seen something while traveling on the Ohio Turnpike last Friday are urged to contact the highway patrol at (440) 234-2096.