Four-man team arrested on Tuesday, while two other staff members have been held for several weeks.
Mohamed el-Beltagy detained by police in Giza, state television reports, after weeks spent in hiding.
Leading Muslim Brotherhood figure Mohammed al-Beltagi has been arrested, according to Egyptian state media.
عساف عبود مراسل بي بي سي في دمشق يرصد الأجواء التي تسود المدينة في ساعات الترقب لما قد يأتي
Internal memo argues UK would be authorised to strike Syria, even if UN Security Council does not approve action.
Judicial official overturns 33-year sentence of Shakil Afridi, who helped CIA track al-Qaeda chief and orders new trial.
الأمين العام للأمم المتحدة بان كي مون يقول إنه سيستلم تقرير مفتشي الاسلحة الكيمياوية في سوريا يوم السبت المقبل.
The UN secretary general says he expects to receive a report from inspectors investigating an apparent chemical weapons attack on Syrian civilians by the weekend.
Inspectors probing alleged chemical weapons attack continue examinations, but will leave country on Saturday.
بينما تناقش الولايات المتحدة وحلفاؤها شن عملية عسكرية ضد سوريا، قراؤنا من دول مجاورة وبعيدة يبدون آراءهم.
At least 15 policemen killed and 10 others wounded when their patrol was attacked in western Farah province.