Malta’s Attorney General has indicted three men for the assassination of the investigative anti-corruption journalist Daphne Caruana Galizia on Tuesday.

The indictment came days before a 20-month deadline to either indict or release suspects in custody expires.

The three men are Vincent Muscat and the Alfred and George Degiorgio brothers. They are accused of planting and setting off a bomb in Caruana Galizia’s car near the Maltese capital Valletta on Oct. 16, 2017. They were arrested and charged in December 2017.

The three men have pleaded “not guilty” but the courts have turned down requests for bail.

The motive for the assassination has never been revealed but Caruana Galizia wrote an anti-corruption blog. Prime Minister Joseph Muscat was a frequent target of Caruana Galizia’s writings. He has offered a million euro reward for information leading to the arrest of the culprits.

The police investigation took place with the cooperation of the U.S. Federal Bureau of Investigations and Europol and the prosecutors are thought to have a strong case.

The family of the 53-year old are seeking a public inquiry into the affair, a demand echoed by the Council of Europe. The government counters that a public inquiry would hinder the police investigation but has not excluded the possibility of holding one in the future.