(Ahlul Bayt News Agency) - Residents say the snipers were deployed in key locations across the city.
This comes as Gaddafi's loyalists are trying to retake the city from revolutionary forces.
Latest reports say the oil-rich city of Ras Lanuf is also under heavy air strikes.
The revolutionary forces have given Gaddafi 72 hours to leave the country or face criminal prosecution.
Meanwhile, Cairo airport officials say a plane carrying a Libyan army general has landed there.
A Libyan diplomat has confirmed that Major General Zawi is carrying a message for the military council that is currently running Egypt.
Furthermore, NATO has announced that it is prepared for any possible scenarios in Libya.
NATO's Secretary General Anders Fogh Rasmussen says the military alliance is not looking to intervene in Libya but is planning for all eventualities.
However, experts say US-led western allies are attempting to seize control of oil reserves in the North African country.
Reports widely indicate that government-led violence in the country has left thousands of protesters dead over the past several days.
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