Described as hard working and focused on helping others, those who knew Pat McVey say news of his death is hard to take in.

"It was a sleepless night," said Don Brown after hearing that McVey was shot and killed while driving on Interstate 55 near Loughborough Wednesday.

Brown works with the St. Louis Bricklayers Local #1 which shares a building with McVey's Maggie O'Brien's pub and restaurant on Market Street.

"I can't say enough good things about Pat," Brown said. "I don't think the guy's got an enemy in the world that I know of."

Police have not said what may have led to the shooting that killed McVey except that the investigators have determined he was shot while driving south on I-55 around 2:30 p.m.

They say a little over three hours later, a MoDOT worker stopped to check on his car parked on the shoulder of the interstate and found McVey deceased. The investigation is ongoing.

Maggie O'Brien's Irish Pub

Inside Maggie O'Brien's, which Brown estimates McVey has co-owned for close to 15 years, a small memorial to McVey is next to a wall. It showcases restaurant and family memorabilia, including photos showing three generations of McVeys serving over the past 125 years in the city's police department.

On the pub and restaurant's Facebook page, there is a request for prayers for the family. By phone, McVey's brother said the family was working with police but did not yet want to speak publicly about their loss.

Family and friends have combined with CrimeStoppers and an anonymous donor to offer a reward of up to $82,000 for information leading to an arrest.

Scene photos: Fatal shooting on I-55