VALLETTA, Malta (AP) — The former chief of staff to the Maltese prime minister has been released from jail as police say there are no grounds at this stage to hold him in the probe of who masterminded the murder of an investigative reporter.

Keith Schembri had resigned his post on Tuesday after being named during police investigation of the 2017 car bomb killing of Daphne Caruana Galizia. She had been writing about corruption in political and business circles.

Jailed businessman Yorgen Fenech had provided information about Schembri, reportedly in a bid to win immunity, but Muscat said Friday the police commissioner and the attorney general recommended that “there is not sufficient reason to grant a presidential pardon.”

Fenech was apprehended on a yacht while trying to flee Malta last week.