An errant mortar shell fired from Syria struck the northern Golan Heights Wednesday evening, the sixth such incident this week.

It came as fighting between President Bashar Assad’s regime and the numerous rebel groups in southern Syria escalated in recent weeks.

The projectile exploded in an open field near Israel’s border with Syria, causing no casualties or damage, the Israel Defense Forces said in a statement.

In light of the increased errant fire hitting the Golan Heights, the United States embassy in Israel urged American citizens “to carefully consider and possibly defer travel to that area until the situation stabilizes.”

In addition, the embassy temporarily forbade US government employees from “personal travel into the area north of Route 87 and east of Route 918 in the Israeli-occupied Golan Heights.”

The recent upsurge in stray fire stems from the growing success of President Assad’s forces in recent days, which has forced rebel fighters into areas closer to the Israeli border, Israeli analysts said earlier this week.

Wednesday was the third day in a row that apparently errant fire from the fighting in Syria landed inside Israeli territory.

Read more at Times of Israel