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"We found some items that are of a suspicious nature," Martin said. "We have found evidence. It is a crime scene," he added, referring to the areas where the objects were found.
He described the objects found as "sort of an explosive device," but "more of a pressure-producing device." He said the objects are designed to create sound, and "damage if you are close to it." He said it was possible but generally unlikely that the items could be considered lethal.
The pressure-producing devices, he said, would not create "a crater," but rather a "large amount of noise." Asked to describe the devices, Martin said they could be as small as four to five inches in diameter, or up to a foot. He said he knew of no known commercial applications for such equipment.
He indicated the items could have been home-made, but declined to answer further questions about their nature, citing the police investigation.
Originally posted by d1k
So what exactly do these pressure devices do? How could they set of a "boom" that can be heard miles away?
Originally posted by MrNice
Unless they were chatting / reading posts on the INTERNET. I've heard that people with similar interests can communicate long distances using that thingy.
I might actually be willing to provide funds via PAYPAL if we could get a serious team to investigate.
Testing EMP weapons?
They are used to call up the giant sand worms.
because bass is very low
Authorities have arrested a 15-year-old resident of the neighborhood where mysterious booms have frightened residents since the beginning of the month.
The explosions were caused by a simple chemical reaction, a city public works spokesman told the Richmond Times-Dispatch. Three devices recovered by police earlier this week were made of common materials, including plastic soda bottles.
The reaction produced enough pressure to burst the bottles and cause a loud boom, the spokesman said.
Officials were unsure what caused the explosion. Vida said investigators searching the area were unable to find evidence of the household materials used in a number of the chemical-reaction explosive devices detonated in the area in the past month.
Still, authorities are not convinced all of the booms can be accounted for by pranksters.
The city is expected to bring in special equipment over the next couple of days to help monitor the ground for possible seismic activity.
"We want to look above and below ground," Vida said. "We will continue the investigation."