The Israel Defence Force tweeted:
Breaking: Direct hit confirmed on Global Jihad-affiliated terrorist in Gaza Strip. Hit was in response to rocket he fired at Israel. 1/2
Terrorist hit was weapons manufacturer Hithem Ziad Ibrahim Masshal. He sold rockets & explosives to terror orgs. 2/2 http://t.co/lKm5XLSabJ
A 29-year-old police officer was killed in an Israeli air strike in the Gaza Strip, according to Ashraf al-Kidra, Gaza's health ministry spokesman.
However there was a conflicting report from Israel's Channel 2 TV claiming the air strike targeted an Islamic militant involved in a recent rocket attack on the southern Israeli town of Eilat.
The Israeli military confirmed that it carried out an air strike on Gaza but gave no further details.
A Palestinian has been killed in a blast which Hamas blamed on an Israeli air strike, a Gaza hospital told Reuters.
A motorbike has been targeted in a strike by an Israeli aircraft near a Hamas training camp in Gaza, Hamas Radio reported.