PITTSBURG — Two unrelated cases have kept the Pittsburg Police Department hopping this month.

According to a PPD release since Jan. 1 six local businesses have had windows damaged by what appear to be projectiles fired from air rifles.

PPD Crime Analyst Jordan Garrison said in the release that four of the incidents occurred in close proximity to each other in the downtown area and the pattern may be related to a similar series of incidents in 2015.

Anyone with information relating to the vandalism is asked to call PPD at 620-231-1700 or at the tip line 620-231-TIPS.

In an unrelated incident on Monday, PPD officers encountered several unexploded homemade explosive devices while on routine patrol.

Commonly known as “Works bombs,” or “Drano bombs,” they consist of two liter soda bottles containing aluminum foil and an undisclosed liquid.

The officers found the devices in the roadway in the 300 block of East Park Street.

An investigation found that a resident of the area had been attempting to manufacture the explosives. Garrison said in the release it was not believed that the individual was intending to use the bombs for further criminal activity.

Made out of readily available household chemicals and materials, “works bombs,” can cause serious injury to people and damage to property.

Anyone who comes in contact with these devices or other suspicious material should immediately contact law enforcement. “Works bombs” are extremely unstable and should not be touched.

— Patrick Richardson is the managing editor of the Pittsburg Morning Sun. He can be emailed at prichardson@morningsun.net, or follow him on Twitter @PittEditor.