Two children of a criminal were injured Thursday, after a bomb went off under their father's car in Beit Shemesh, police said. The morning blast on Rehov Ha'aliya in the quiet residential city between Jerusalem and Tel Aviv left a 10-year-old boy seriously hurt, while his father and seven-year-old sister were lightly wounded in the explosion. The three were rushed to Hadassah-University Hospital at Ein Kerem by Magen David Adom paramedics. Police initially thought that a technical malfunction caused the explosion, but later discovered that it was an explosive device planted under the parked car, Jerusalem police spokesman Shmuel Ben-Ruby said. The "low-level" 45-year-old criminal, identified as Nissim Haliwa, has been the target of the mob before, police said.