“At least five Israeli strikes targeted Beirut’s southern suburbs,” the source said, requesting anonymity because they were not authorised to speak to the media.
AFP correspondents heard multiple explosions and saw smoke rising in one area while a fire appeared to burn.
The Israeli military said early Wednesday that it was “currently striking Hezbollah terror targets in Beirut”.
Israel has repeatedly bombarded Beirut’s southern suburbs since last week, a densely-populated Hezbollah bastion where Israel says it is targeting sites belonging to the group.
A massive raid in the area on Friday killed Hezbollah chief Hassan Nasrallah.
Israeli military spokesman Avichay Adraee had earlier on X issued several orders for residents to leave.
“You are located near dangerous Hezbollah facilities, which the IDF (Israeli military) will act against with force in the near future,” read one of the warnings, which mentioned the area of Haret Hreik.