The Israeli military says its aircraft struck two militant tunnels, two weapons manufacturing and storage facilities, and two other militant sites across the Gaza Strip.
Palestinian health official Adham Abu Salmia reported that 18 civilians and Hamas security forces were slightly wounded.
Facilities near the targets were also reported damaged.
The military said on March 22 that the sites were targeted overnight in response to 56 mortar shells and rockets fired from Gaza into Israel over the past week.
The military also said the tunnels were dug so militants could infiltrate Israeli territory to attack civilians and soldiers.