Israeli strikes on Gaza City flattened three buildings and killed 42 more people on Sunday alone, marking one of the deadliest days so far in the week-long conflict.
Citing Palestinian officials, Reuters reports at least 190 people have been killed over the past week in Gaza, with another 11-hundred wounded.
It added Israel reports ten Israelis have been killed and at least 560 have been injured.
On Sunday, Israeli air strikes hit the HQ of Hamas' political wing in a densely populated residential area.
Israel has been targeting a number of tall offices and residential buildings in Gaza, saying they contain Hamas military infrastructure.
Among them, was a building also housing Associated Press journalists.
Following the attack, Israel's Prime Minister explained Israel has received back-up from the U.S., and hinted its fight will continue.
"Our battle against the terror organization continues in full-force. We are charging very heavy prices from Hamas for their unbearable aggression. The Israel Defense Forces carried out attacks on more than 1,500 targets during the last days."
This comes amid international efforts to halt violence.
The UN Security Council met Sunday to discuss the situation, calling for an end to the conflict as well as the resumption of peace talks.
"This senseless cycle of bloodshed, terror and destruction must stop immediately, all parties must respect international law and international human rights law. The status quo at the holy sites must be upheld and respected."
Pointing out that the UN Security Council was not able to reach consensus, China's representative said all members need to take necessary efforts to safeguard peace and security in the region.
Kim Hyo-sun, Arirang News.