The Hennepin County Sheriff along with detectives with police departments in Coon Rapids, Osseo, New Hope and Robbinsdale are looking for a blue-grey mid-1980s Oldsmobile Delta 88 that might have been driven by the man suspected of robbing four pharmacies in the northwestern Twin Cities suburbs.

The suspect left on foot in most cases, but a vehicle matching that description might be associated with a hold up at the Mainstreet Pharmacy in Osseo on Oct. 24 and robberies at CVS Pharmacy stores in New Hope on Oct. 28, Robbinsdale on Nov. 11 and in Coon Rapids on Monday, said Kathryn Janicek, a spokeswoman for the Hennepin County Sheriff.

Janicek said her office has received some tips, but so far none has led them to the suspect who authorities believe is responsible for the heists.

In each of the robberies, the man has walked up to the counter and told the pharmacist that someone is holding his family hostage and will kill them unless he returns with painkillers.

He then shows a gun and hands the pharmacist a brown bag and instructions to put the prescription narcotics inside the bag. With drugs in hand, he leaves the store on foot. "We do believe it is the same suspect," said detective John Stahnke of the Coon Rapids Police Department. In all four cases, the suspect is described as a white man in his mid-30s, between 5 feet 8 and 5 feet 10, and 185 to 190 pounds. In the latest robbery reported at 1:45 a.m. Monday, the suspect was wearing a blue hooded sweatshirt under a black jacket with the hood up over a dark-colored baseball cap. He was wearing light blue jeans and white tennis shoes, police said. Anybody with information on the Coon Rapids robbery can call the police department at 763-767-6481 or the Anoka County Sheriff at 763-427-1212. Anybody with information on the Robbinsdale, New Hope or Osseo robberies can call the Hennepin County Sheriff at 612-348-3744.