JERUSALEM — Gaza militants fired a barrage of rockets and mortar shells into Israeli territory on Monday, causing no casualties but some property damage, after an Israeli airstrike in southern Gaza on Sunday killed one Palestinian and wounded at least nine others.

Israeli warplanes responded immediately, striking a number of rocket-launching squads as they fired toward Israel, according to the military, and hitting several facilities belonging to Hamas, the Islamic group that controls Gaza. The military said the sites were being used to store weapons.

Ashraf al-Qedra, a spokesman for the Health Ministry in Gaza, said that five Palestinians were wounded in the strikes on Monday, one of them seriously.

The latest flare-up began with a missile strike on Sunday against two men who Israel said were members of jihadist groups involved in terrorist activity against Israel. Some Palestinian news outlets identified them as radical Salafi militants. Gaza medical officials said that the two, who were struck while riding on a motorcycle, were critically wounded, and that one later died. They said that at least eight passers-by were also wounded in the strike.