A rocket was shot from the Gaza Strip toward Israel Thursday night, though it was unclear if the missile landed in Israeli territory, the army said.
No rocket sirens were triggered, indicating the projectile was not headed for a populated area in Israel.
No impact site was immediately identified and the Israeli military said it was investigating.
On Monday, sirens sounded near the Gaza border, but no rocket impact site was found, and the IDF said it was possible the sirens had been a false alarm.
The last several weeks have been relatively calm along the Gaza border, with no rockets fired out of the Palestinian enclave.