Essex Police has handed over its file on Chris Huhne's speeding fine allegations to the Crown Prosecution Service.
Officers have been investigating whether the Energy Secretary asked his now ex-wife Vicky Pryce to take speeding points when he was a Liberal Democrat MEP in 2003.
In a statement, Essex Police said: "We have shared the material we received with the CPS and officers will meet with them to discuss this in the next few days as we said we would."
It comes after the publishers of The Sunday Times dropped a High Court challenge to an Essex Police bid to obtain emails relating to the speeding allegations.
Investigators were keen to see the correspondence between political editor Isabel Oakeshott and Ms Pryce.
The move gave police the green light to peruse the emails and consider whether they could be evidence against the MP.
Mr Huhne denies any wrongdoing regarding the allegations.
Last Friday, a spokeswoman for David Cameron said the Prime Minister has confidence in the Energy Secretary.
She declined to speculate on whether Mr Huhne would remain a minister if he is charged with any offence.