The man believed to be responsible for two armed robberies in DeKalb within one week was arrested Tuesday night by Naperville Police.

DeKalb Police Chief Donald Berke said David A. Reed, 35, Channahon, was arrested by Naperville on unrelated theft and traffic charges. He since has been positively identified as the man responsible for two robberies involving the use of a semi-automatic handgun at Pick ‘N Save, 2500 Sycamore Road, on Oct. 31 and Osco, 1320 Sycamore Road, on Nov. 7.

Berke said Reed also has been implicated in three other armed robberies in Ottawa, Morris and Yorkville. DeKalb Police Lt. Richard Moudy said the circumstances of the five robberies are “all very similar.”

Moudy said an investigation by the Naperville Police led to the discovery of a semi-automatic handgun in Reed’s car. They sent this information out to surrounding police departments to see if any cities had interest in the man and DeKalb Police responded.

A joint investigation between the five police departments involved began Tuesday afternoon.

DeKalb Police have been searching for the man since the time of the first robbery. After the second robbery, DeKalb Police believed the same man might have been responsible for both crimes because of striking similarities in the physical descriptions and method of operation of the suspect.

In both of the DeKalb robberies, the suspect went to the check-out with a beverage to purchase. When the clerk was giving change, he displayed the semi-automatic handgun and demanded money. After both robberies, the suspect fled on foot.

Reed reportedly left Pick ‘N Save with about $500. The amount of money stolen during the Osco robbery is still undetermined.

Reed has been transported to the DeKalb County Jail in Sycamore. His bond has been set at $200,000. Moudy said Reed was transferred to DeKalb County because the greatest number of charges against him are here.

The three other armed robbery charges against Reed will all be handled separately in each of the three counties in which they occurred.

DeKalb County State’s Attorney Michael Coghlan said armed robbery is a felony that is punishable by six to 30 years in prison and a fine of up to $10,000. The penalty for unlawful use of a weapon is up to one year in jail and a fine of up to $1,000.