Malta's Prime Minister Joseph Muscat attends a working dinner during a European Council Summit in Brussels, June 30, 2019. (Photo: VCG)

VALLETTA, Nov. 28 (Xinhua) -- Maltese Prime Minister Joseph Muscat's former chief of staff Keith Schembri was released from police custody, according to the police on Thursday.

The police explained Thursday evening that following intensive investigations in connection with journalist Daphne Caruana Galizia's murder, the police did not feel it's necessary to keep Schembri under arrest any longer.

Schembri had been mentioned by the main suspect in the murder, businessman Yorgen Fenech, as having been the mastermind of the murder.

Schembri was taken into police custody on Tuesday.

Fenech has asked for a pardon to tell all about the murder.