The Israeli military on Thursday said it has identified two residential buildings in the northern Gaza Strip as potential military targets after discovering Hamas terror tunnels underneath them.

The army released satellite images of the homes, located near the Israeli border, on Thursday, a day after it struck Hamas targets in Gaza in response to a rocket strike on southern Israel.

Maj. Gen. Eyal Zamir, head of Israel’s Southern Command, said the situation in Gaza is “stable, but volatile.” But he said the two buildings in the photos would be legitimate targets in the event of a future conflict and would draw Israeli forces into densely populated civilian areas.

The military did not say how the tunnels had been identified.