The European Union has acknowledged Israel’s security concerns following recent rocket attacks from Gaza.

Israeli fighter jets “targeted underground infrastructure in the southern Gaza Strip, in response to the projectile that was launched at Israel earlier,” an army statement said. It did not give further details, but Palestinian security sources said several missiles were fired at farmland east of Rafah in the south of the Gaza Strip, reported the Agence France-Presse (AFP).

Maja Kocijancic, the EU’s spokesperson for foreign affairs and security policy, said the flare-up was of “real concern”, describing the deaths of the Palestinian teenagers as “deplorable” and demanding a halt to rocket fire.

“Rocket attacks by militants from Gaza against Israel are unacceptable and need to stop,” it said in a statement which acknowledged “Israel’s legitimate security concerns”.

“It is extremely important that the situation does not escalate further and it is crucial that all parties act with restraint,” it added.

The EU is reportedly ready to support a political solution for Gaza, such as the Cairo Agreement of October 2017.