31 January 2013 Last updated at 09:10
No-one jailed for fuel smuggling 'in decade'
Fuel laundering Custom officers said the shed had been built with laundering diesel as its purpose
John Whiting, assistant director of criminal investigation for HMRC, was speaking after a diesel laundering plant was found in County Armagh.
He said that time behind bars would be a "disincentive" to fuel smugglers.
"That is an issue we have raised with the Northern Ireland Affairs Committee as a matter of concern," he said.
"There are a number of discussions taking place, we are aware that the Lord Chief Justice has prepared some sentencing guidelines, we are also engaged with the Department of Justice in a review of comparative sentencing with England and Wales compared to Northern Ireland.
At the scene Francis Gorman BBC NI
The building was big enough to contain three petrol tankers. As you stood looking in on the left there was a large tank, big enough to hold 50,000 litres of either green or red diesel. It was secured to a long trailer. On the right hand side was a petrol or diesel tanker, the kind you would see out on the road.
In between the tank and the tanker there were two manholes. It seems that underneath the shed were large tanks that stored the laundered diesel. So it was treated in the tank on the left, stored underground then pumped up into the tanker on the right.
"One of the things that we have been concerned about - that we have no right of appeal in respect of unduly lenient sentences - the Department of Justice is consulting about a new piece of legislation on that issue. "They are being sentenced, but with suspended sentences. They are getting imprisonment but it is suspended.
"In England and Wales the sentence is actually custodial, people are going to jail, clearly there is a disincentive to the crime if you are going to have your liberty removed and that disincentive has not existed in Northern Ireland."
In a raid on Wednesday, officers removed 14 tonnes of toxic waste from an isolated shed near the village of Jonesborough in south Armagh.
They discovered large underground tanks being used to launder green diesel. Mr Whiting said that it was one of the most sophisticated plants ever found in Northern Ireland and had now been dismantled. He said the plant was capable of producing 25m litres of illicit fuel, evading over £18m in taxes and duty a year.
"The level of sophistication was astounding," he said. "It appears to us that the premises had been built solely for the purposes of laundering fuel. "We believe that the underground tanks were installed at the time it was built."