According to this article in Al-Joumhouria, at least three crocodiles were spotted in Beirut river near Karantina after someone dumped them there. After checking with a veterinarian, it turned out these are actually Nile crocodiles, a specie that is quite dangerous (do there exist safe ones?).
Both ministries of environment and agriculture were unfortunately unaware of this story, and I guess the crocodiles will most probably die on their own before these ministries decide to take any action. So for the time being, Animals Lebanon will be working on catching them and returning them back to Africa.
You can read the full article here.
Update:
Below is a video showing one of the crocodiles in Beirut river.