Sirens are sounding off in northern Israel on Wednesday and residents are being told to shelter in place amid reports of an incoming "large-scale" drone attack.

Israeli Defense Forces said it received a report of a "suspected infiltration" from Lebanon into Israeli airspace.

"All residents in the areas where the warning was sounded are asked to enter the protected areas and stay in them until further notice," IDF said.

This is a developing story. Please check back for updates.