A man masquerading as a worker has stolen a forklift worth GBP32,000 (USD61,564).
The Citizen newspaper reported a worker saw the hard hat-wearing thief drive the Caterpillar telescopic handler out of the Davy Way, Quedgeley site at around 6.50pm on December 9.
A police spokeswoman said the orange vehicle carried the registration number SF45 EVJ.
"He had a hard hat on and the [witness] assumed he was one of the workers," she said.
Police said 1500 litres of diesel were stolen from the same area the night before