11.   Hamas had carried out previous bombings in Israel.

12.   He noted that in previous bombings, attackers added rat poison to the explosives.

13.   However, after previous bombings it has knocked down Palestinian security buildings or carried out targeted killings of militants believed to be responsible for the attacks.

14.   Islamic militants in previous bombings have worn Israeli disguises to get close to bus stops crowded with soldiers.

15.   Islamic militants have donned Israeli disguise to get close to bus stops crowded with soldiers in previous bombings.

16.   Islamic Jihad, the radical group that has claimed many previous bombings, said its member, Muhammad Nasser, carried out the attack.

17.   No one was killed in the previous bombings.

18.   Previous bombings attacks have been claimed by the Muslim militant groups Hamas and Islamic Jihad.

19.   Previous bombings have been blamed on the separatists.

20.   Previous roadside bombings have been blamed on the Iranian-backed Hezbollah militia.