PARIS (AP) — French police have arrested three men in connection with the killing of two police officials earlier this year by an extremist claiming loyalty to the Islamic State group.

Paris prosecutor's office said Wednesday that three people with links to attacker Larossi Abballa, who was killed in a police raid in June, were arrested Monday and placed in custody.

The suspects are aged 22, 25 and 39. Authorities say two of them have ties to radical Islam.

On June 13, victim Jessica Schneider, a police administrator, and police commander Jean-Baptiste Salvaing were stabbed at their home in Magnanville, about 35 miles (55 kilometers) west of Paris. Their 3-year-old son survived the attack. Abballa was shot dead when police stormed the home to rescue the child.