UPDATE: It appears it may have been a failed IDF special ops mission (failed in the sense that they apparently didn't get their man, but as you'll see, they got someone) that the alert was talking about:
Lebanese army officials say special IDF forces fail in attempt to kidnap senior Hizbullah member from hospital near Baalbek; Lebanese media say mark may have been Hizbullah High Council member Sheikh Muhammad Yazbek; eyewitnesses report gun battles, casualties at scene
Lebanese army and security officials said early Wednesday that special IDF forces attempted to kidnap a senior Hizbullah member from a hospital near Baalbek in the west Lebanon Valley.
Lebanese media say the mark may have been Sheikh Muhammad Yazbek, a member of Hizbullah’s High Council and one of 12 senior organization members.
It remains unclear whether the operation was successful, but witnesses said “the Jews took some people with them.”