The Saudi Agriculture Ministry announced Friday that it had culled over 90,000 birds after a deadly H5N1 strain of bird flu was detected at two poultry farms in Al-Kharj, 80 kilometers (50 miles) south of the capital, Riyadh.
Akhbar al-Khaleej newspaper, based in Manama, said Bahrain introduced strict control over Saudi poultry imports to prevent the spread of the deadly virus in the kingdom.
Qatar has earlier announced the same restrictions on Saudi poultry imports.
The latest outbreak of avian influenza was registered in Saudi Arabia in March. No human cases have been reported in the outbreak.
The deadly H5N1 strain of bird flu has claimed over 200 human lives since it was first registered in Southeast Asia in 2003.