UN Secretary-General Ban Ki-moon will arrive in Egypt tomorrow for talks with the Egyptian President and other officials, Reuters reported, citing the country's Foreign Ministry.
The ministry did not give details of his planned discussions, only saying he would talk about regional issues.
Egypt is negotiating a truce over Gaza and President Mohamed Mursi, who Ban is due to meet on Tuesday, has said there are "some indications" a deal could be reached soon.
Today's bombing in Tel Aviv is reminiscent of six years ago and could mark a serious escalation in the conflict.
A truce in Gaza suits all sides but none of the groups seem interested in a long-lasting solution.
A complex system of air defences has been instrumental in protecting Israel's population from incoming rockets.