CAIRO - Assem el-Gohari, the head of the Illicit Gains Authority, affiliated to the Ministry of Justice, Sunday postponed probes with former president Hosni Mubarak's sons, Gamal and Alaa, who are charged with illegally amassing wealth, the official Middle East News Agency reported The two brothers were set to be questioned on Sunday, but their lawyer Farid el-Dib was busy with another case, according to the official. "Questioning them will resume on Monday." El-Dib was busy attending Sunday's investigations with wife of ex-terior minister Habib el-Adli, Elham Sharshar, on graft charges. Sharshar, who denies acquiring her fortune from her husband, was released later in the day. Reports reveal that she owns villas, flats and agricultural land, as well as having a lot of l cash money. El-Adli has been sent down for 12 years for graft.