Daphne Caruana Galizia, whose reporting focused heavily on corruption on the EU island nation, was killed Oct. 16 when a bomb destroyed her car as she was driving near her home.
Eight Maltese citizens were arrested because of a "reasonable suspicion" of their involvement in Caruana Galizia's killing, Prime Minister Joseph Muscat told reporters at a news conference. Shortly afterward, he tweeted that two others had been arrested.
Declining to give details on the arrests, Muscat cited concerns any information could compromise prospects to successfully prosecute the case. Farrugia said he wouldn't disclose anything else because "I have been already threatened by legal action by the Caruana Galizia family."
Last month, her family had alleged that Farrugia had divulged confidential information that could hamper the investigation. The minister brushed off the allegation, but the family said it was prepared to take legal action to prevent the government from sabotaging the investigation.
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On Monday, her family reacted angrily to how the arrests were announced saying police should have informed the family, not Muscat first and reiterating in a statement their uncertainty if justice will be carried out, despite the prime minister's public insistence earlier in the day that all would be done to solve the case.
They said they had already written to the police commission about "the constant stream of leaks which prejudice the integrity of the investigation," but never received a response.
The family contended the police had leaked information about the identities of seven suspects. "It is important to ask whether they are not also leaking information to other suspects, some of whom could be in or close to government."
The investigation appeared to be continuing throughout Monday, as police and armed forces had cordoned off an area in Marsa, a small port town close to Valletta, the capital. The arrests, made in an operation coordinated among the Police Corps, the Armed Forces of Malta and the Security Services, were the first known break in the killing, which has drawn widespread outrage and condemnation.
A court hearing was set for Tuesday, when the police can officially file charges. The suspects then can either plead innocent or guilty. The magistrate will decide whether to set bail or remand them in custody.
Europol, the European Union's police agency, has sent a team of organized crime experts to help Maltese police investigate the assassination, joining the FBI and Dutch forensic experts.