An official in Romania says that the notorious French fugitive who staged a deadly escape that killed two guards last year is being extradited to France from Romania.

A suspected gangland killer described as France's "public enemy number one" was formally indicted on a slew of organised crime charges including murder before an investigating magistrate in Paris late Tuesday after his extradition from Romania.

Since his deadly escape from a prison van last year, Mohamed Amra, known as 'The Fly,' had disappeared. The manhunt, involving around 100 investigators, came to an end in Bucharest on Saturday.

Two guards were killed when armed assailants helped Mohamed Amra escape from a prison convoy last May, prompting a high-profile search.

Mohamed Amra had fled after armed men ambushed his prison transfer van, killing two officers and injuring three others. View on euronews

The Paris chief prosecutor said those arrested are alleged to have helped in the escape of Mohamed Amra in a deadly prison van ambush nine months ago.

A suspected gangland killer described as France's "public enemy number one" was formally indicted on a slew of organised crime charges including murder before an investigating magistrate in Paris after his extradition from Romania.