British Columbia Mounties say two tonnes of a potentially dangerous chemical compound that was feared missing was never actually gone in the first place.

A massive investigation between the RCMP, Vancouver 2010 Joint Intelligence Group and Natural Resources Canada was launched after pipeline and energy giant Kinder Morgan told RCMP Dec. 31 two one-tonne bags of ammonium nitrate were unaccounted for during a fall shipment from Alberta to B.C.

An internal investigation by the RCMP has ruled that the accounting discrepancy is likely a result of administrative errors, Sgt. Rob Vermeulen said in a statement issued to media Tuesday afternoon.

"There is no evidence of theft or other criminal involvement in the inventory discrepancy and that a high level of security was in place throughout the process of manufacture, transport and storage of the Ammonium Nitrate."

On Jan. 6, police said, the company informed authorities that the inventory discrepancy was the result of a clerical error and that all the material had been accounted for.

But on Jan. 16, RCMP said they were still not satisfied the chemical compound was accounted for.

More than 200 people in B.C., Alberta and Salt Lake City were interviewed during the probe.

Ammonium nitrate, commonly used as a high-nitrogen fertilizer, is sold to mining companies as an oxidizing agent for explosives. It has also been used in several terrorist attacks, including the 1995 Oklahoma City bombing, which killed 168 people and injured more than 600.

Kinder Morgan is one of the largest pipeline and energy storage companies in North America, with more than 35,000 miles of oil pipelines. The company transports, stores and handles energy products including natural gas, refined petroleum, crude oil and ethanol.