GAZA CITY (AFP) - Palestinian militants fired two rockets at southern Israel on Thursday, after Israeli warplanes attacked "terror sites" inside the Gaza Strip, the army said. The first, which landed in an open field on Thursday morning, was claimed by the Popular Resistance Committees in a statement sent to AFP. A second fell during the afternoon, the military said, reporting no injuries or damage in either case. Overnight, Israeli warplanes targeted "terror sites" in central and northern Gaza in retaliation after rockets were fired across the border on Wednesday.