Tánaiste 'disturbed' by Israel violence after air strikes in Gaza kill 13

Fire burns at an apartment of an Islamic Jihad commander for northern Gaza, following Israeli airstrikes in Gaza City (Adel Hana/AP)

The Tánaiste has said that he is "disturbed" after violence scenes in Israel saw 13 people killed by air strikes.

Israel killed three senior commanders of the militant Islamic Jihad group in targeted air strikes early on Tuesday, the military said.