One militant rocket attack killed a Palestinian worker in the West Bank, while Israel's strikes have killed at least seven Palestinians.
Smoke and flame are seen during an Israeli air strike in the Hamas-ruled Gaza Strip, March 15, 2019.
This is a breaking news story and is constantly being updated.
Explosions were heard in the Gaza Strip early on Friday and Palestinian witnesses said Israeli planes bombed Hamas security positions.
Netanyahu warned Gaza's Hamas rulers on Sunday that Israel would not hesitate to launch a "large-scale operation" in Gaza if provoked.
The escalation follows weeks of growing tension and comes at an especially sensitive time ahead of Israel's April 9 elections. Though the attack caused no damage or injuries, it was a significant escalation and set the stage for a tough Israeli reprisal.
Hamas denied responsibility for the attack on Tel Aviv, saying the rockets were launched when the group's military wing was meeting with the Egyptian mediators. Among the terrorist targets was the offices of the Hamas headquarters in Gaza City responsible for directing terrorist operatives in Judea and Samaria, building terrorist infrastructures and transferring money to those responsible for terrorist attacks against Israeli citizens.
"The IDF holds the Hamas terror organization responsible for all events transpiring in the Gaza Strip and emanating from it", the military said in a statement.
Militants fired two rockets towards Israel's main metropolitan area, both of which landed in open ground, the IDF said.
Tel Aviv Mayor Ron Huldai told public television one of the Gaza rockets "apparently fell into the sea, the other hit somewhere but not in Tel Aviv".
Two long-range rockets fired from Gaza exploded in Tel-Aviv during rush hour Thursday evening.
Israel responded with warplanes, which hit 100 Hamas "terror sites", a statement from the Israel Defense Force said. Israel and Hamas have fought three wars since Hamas sized control of Gaza in 2007. Hamas possesses a big arsenal of rockets and missiles, but it has sought to contain violence with Israel since the last war in 2014.
Hamas denied responsibility for the initial rocket attack and promised to take action against the perpetrators, saying such attacks went "against the national consensus".
It is possible that the political echelon felt they could not ignore the launch against Israel's most dense population area, regardless of the enemy's intent.
"I'd suggest to Hamas - don't count on it".