A clerical error appears to be the reason why two tonnes of an explosive chemical compound could not be accounted for, officials with Kinder Morgan said late Wednesday.

"This is our understanding right now as a result of our review. We are confirming and re-confirming this right now," said Lexa Hobenshield, manager of external relations, in an email to ctvbc.ca.

RCMP officials said late Wednesday that after talking to Kinder Morgan representatives they do not believe any of the product is missing.

"Based on this new information provided by Kinder Morgan, the RCMP is satisfied that no product is missing," the RCMP said.

However, police said investigators will still meet with company representatives on Thursday to review their documentation and the source of the discrepancy.

Six thousand cubes of ammonium nitrate, weighing one tonne each, were transported from a plant in Redwater, Alta., to the company's North Vancouver facility sometime before Christmas. The product's final destination was Surrey.

In a press release Wednesday afternoon, Kinder Morgan said two cubes of the product could not be accounted for after the cubes were transported from one facility to another local facility.

The company launched an internal audit.

And as a "precautionary measure," the company reported the discrepancy to authorities.

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.

A compound called ANFO -- ammonium nitrate mixed with fuel or diesel oil -- is often used in improvised explosive devices or fertilizer bombs. ANFO was used in the Toronto 18 plot as well as the Oklahoma bombing.

With files from CTV British Columbia's Lisa Rossington and Darcy Wintonyk