Dive summary:

• A garbage collector in Bend, Ore. was injured on Thursday after picking up a bottle that exploded in his hand when he opened it.
• Three bottle bombs were found in the area, the bombs can be made of simple household materials and explode when exposed to air.
• The man wasn't hurt too badly and the Oregon State Police Bomb Squad was called in to dispose of the other two so that no one else would get hurt. 

From the article:

The worker said he found what he believed to be a discarded water bottle filled with liquid. He picked up the bottle with intentions of recycling it, but when he opened the lid to empty it out, it exploded in his hand, police told reporters.

"It looks like they were more likely tossed than placed with a targeted intention," Police Sgt. Dan Ritchie told local news.

Police are investigating who might be responsible for making the devices, according to the report. ...