A man walking a dog Thursday stumbled across a pipe bomb in Memorial Park, not far from a children's playground.
Omaha police said the bomb likely had been in the park for some time, possibly left before the last snowfall.
Sgt. Matt Manhart of the bomb squad said he hadn't encountered a device like the one found along the park's creek since he was in training.
Officers were called to Underwood Avenue and J.E. George Boulevard just before 9:45 a.m.
They found one large pipe bomb. Bomb technicians defused it, only to find a second bomb inside.
The second bomb, once defused, opened to reveal a third bomb, police said. The last bomb was rendered safe shortly after noon.
Manhart said the device, made of PVC pipe, was “pretty dangerous. I mean, with the explosive filler that was inside of it, had that device (detonated) it would have probably caused some damage.”
Police said nearby homes and schools were never in danger. The bomb's location near the creek bed made it easier for technicians to defuse it.
It also helped that all three explosives were made with the same design and materials, which appeared to be “common items that you get at a hardware store,” Manhart said.
The bomb's design might have been the result of someone experimenting with explosives, he added.
Technicians didn't immediately determine what could have triggered the bomb. They planned to examine the pieces to learn how the device was designed to detonate, Manhart said.
Based on the amount of dirt and moisture on the bomb, he said, the device had been in the park for a while.
No other bombs were found in the area, and Manhart said police had made no arrests.
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