On Saturday, Palestinian militants fired dozens of mortars into southern Israel in what appears to be their heaviest such barrage in two years.
About 50 mortars were fired, injuring two Israelis.
Israeli tanks later shelled targets in the coastal strip, wounding at least five people, Palestinian officials said on Saturday.
The Islamist group Hamas, which runs Gaza, said it fired some of the mortars. Three days ago an Israeli air strike killed two of its members.
The BBC's Jon Donnison in Gaza says this seems to be an escalation - both in terms of the number of rockets fired from Gaza and the fact that Hamas said it was responsible.
That terror attack "seems to be an escalation"?
"Seems to be"?
Thank you BBC.
Oh, try this Calendar of EOZ, and this site, too and find out what an escalation it was and continues.