Hamas security officials say Israeli aircraft targeted a Gaza City warehouse in a nighttime airstrike, AP reported.
The officials say the warehouse was empty and no one was injured.
The Israeli military confirms the strike, saying the target was used by militants as a weapons warehouse. The military says aircraft also struck two smuggling tunnels under the Egypt-Gaza border.
Palestinian militants launched a rocket and a mortar shell into Israel on Sunday, causing no injuries.
Rocket fire by Gaza militants and Israeli retaliatory airstrikes have become nearly daily occurrences. Israel halted a military offensive aimed at ending the rocket fire on Jan. 18, but sporadic violence persists as Egypt-mediated talks on a long-term truce have failed to yield results.