Islamabad: The incumbent Pakistan Tehreek-i-Insaf (PTI) government has decided to seek the deportation of former Prime Minister Nawaz Sharif from London, where he is undergoing treatment, a media report said.

"Government departments concerned will start the process of writing a letter to the UK from the coming week," Dawn news quoted Special Assistant to the Prime Minister on Information and Broadcasting Firdous Ashiq Awan as saying on Sunday.

Casting doubts on the former premier's illness, Awan said neither did he undergo any heart surgery nor was he admitted to hospital for any emergency during the last three months.

"It is time to bring back the VIP prisoner who is having a lavish stay abroad," she added.

Meanwhile, the opposition Pakistan Muslim League-Nawaz (PML-N) has said that Sharif will move the Lahore High Court against the Punjab province government's refusal to grant him extension in his stay abroad for treatment.