Police announced the arrest of three suspects Sunday in connection with a bombing in the city of Rehovot two months ago that seriously injured two people.

The three planted the explosives in the street that caused the blast, according to police, who added that they expected to make more arrests in the case.

The two injured men, a father and son aged 47 and 22, were driving in the Kfar Gavriel neighborhood of the city at about 10 a.m. on December 23, 2013, when the bomb went off.

Police and rescue services rushed to the scene and found the father suffering from multiple internal injuries and the son badly burned.

The two, who were taken to the city’s Kaplan Hospital for treatment, were said to have criminal affiliations.

At the time of the incident, police said that the attack appeared to have been an attempted hit by criminals rather than a terror attack.