The Accra Mail reports that Presidential Advisor on Energy, Dr Charles Wereko-Brobby, at a Ministry of Energy organized press conference on Tuesday, challenged the National Democratic Congress to establish acts of impropriety in connection with the Sahara oil contract against any member of the government or shut up.

"The NDC must identify the guilty person in the Sahara issue or stop making noise," Dr Brobby threw the gauntlet at the press briefing, the second in a month, called to finally clear the controversy surrounding the lifting of oil from Nigeria to Ghana.

The energy expert wondered why for the past eight years the NDC deemed it necessary to sign a lifting contract with Vitol, but in a whirlwind fashion is accusing the NPP government for doing what is standard practice in the oil industry.

Dr Brobby disclosed that whereas the NDC signed a contract for lifting and financing with Vitol to the detriment of the economy, the NPP had the foresight to sign only a lifting contract.