A firecracker is being blamed for shutting down Como Lake Avenue between Baker and Thermal Drive for several hours on Saturday afternoon.
Coquitlam RCMP received a call shortly after noon from a resident in the area who indicated she found a package with the words "tube bomb" written on the side of it.
Police blocked traffic in the area and evacuated several homes before investigators were able to determine that the explosive was relatively harmless.
"We wanted to err on the side of caution," said Coquitlam RCMP Cpl. Jamie Chung. "Our investigators were eventually able to determine that it was a tube bomb firecracker."
After several hours the streets were re-opened and residents were allowed to return to their homes.
The firecracker, according to Chung, was about seven inches long and two inches in diameter.
"It is a pretty big firecracker," he said. "I have never seen a firecracker like that before."
