VALLETTA, Malta — Ten suspects were arrested Monday for the car bomb slaying of a prominent Maltese journalist who covered corruption, the prime minister and other authorities said. The arrests came seven weeks to the day after the assassination of Daphne Caruana Galizia. They were the first known break in a crime that shocked Malta and motivated European Union officials to look into the EU island nation's laws and government. Caruana Galizia, 53, was killed Oct. 16 when a bomb destroyed her car as she was driving near her home. Prime Minister Joseph Muscat, who was among the subjects of the late reporter's investigations, declined to say who the suspects were or why they were arrested. Eight Maltese citizens were arrested because of "reasonable suspicion" for their involvement in Caruana Galizia's killing, Muscat told reporters at a news conference. A little while later, Muscat tweeted that two others had been arrested. They also are Maltese, Home Minister Michael Farrugia said. Authorities did not release the names of any of the 10 suspects. Explaining the reason for staying tight-lipped, Muscat cited concerns that divulging information could compromise the prosecutions. Farrugia said he wouldn't disclose anything because "I have been already threatened by legal action by the Caruana Galizia family." The journalist's family alleged last month that Farrugia had put the investigation at risk by sharing confidential information with lawmakers. The minister brushed off the allegation, but the family said it was prepared to take legal action to prevent the government from sabotaging the case. Caruana Galizia's family reacted angrily to how the arrests were announced on Monday, saying police should have informed them before the prime minister. They reiterated their skepticism that justice would be carried out, despite Muscat's public insistence that all would be done to find and punish the killers. Muscat "appears to view the investigation into Daphne Caruana Galizia's assassination as a marketing exercise for his government and not as a contract killing, which has left surviving family members wondering what happened and how justice can be truly served," the family