A bomb has exploded on an Israeli bus near the states military headquarters in Tel Aviv, wounding 21.
Medical teams say three of the passengers suffered severe injuries.
Authorities claim the attack was an act of terrorism.
Israeli police have arrested one man and are on the hunt for another.
The blast was not a suicide attack, security services say a sports bag was left on the bus, which exploded.
The last time a bomb hit the heart of Israel’s commercial capital was in June 2006, when a Palestinian suicide bomber killed 11 people at a sandwich stand.
Hamas voiced support for the bomb attack, but fell short of claiming responsibility.