ANTI-CORRUPTION Commission (ACC) director-general Rosewin Wandi has said the letter inviting former President Rupiah Banda for questioning was delivered to his office on Monday afternoon.

"As far as I am concerned, we served the letter yesterday (Monday) in the afternoon. It was delivered to his office," Ms Wandi said.

She said in an interview yesterday that Mr Banda was summoned to appear before the Government Joint Investigations Team and he was expected to avail himself tomorrow in the morning.

Government Joint Investigations Team spokesperson Namukolo Kasumpa also confirmed in a separate interview that the letter was delivered to Mr Banda's office and that officers would wait for him tomorrow at the Drug Enforcement Commission (DEC) head office in Lusaka.

"We decided to interview him at DEC because we are renovating our offices but he is supposed to appear on Thursday (tomorrow)," she said.

Mr Banda, who was defeated in the September, 2011 general elections, becomes the latest high-profile figure to be summoned before investigative wings after several of his former Cabinet ministers appeared before the investigative wing for alleged corrupt involvement.

According to the summons dated February 4, 2013 signed by Ms Wandi, Mr Banda was expected to appear at the DEC head office in Lusaka tomorrow morning.

But his administrative assistant Mikatazo Wakumelo said in a telephone interview yesterday that the letter of summons had not yet been delivered to Mr Banda's office.

"I don't know about the summon you are asking me about because I have also just seen that in your newspaper. I am the one in charge of Mr Banda's office, so I could have seen that summon you are talking about," Mr Wakumelo said

Meanwhile, MMD president Nevers Mumba has accused President Michael Sata of abusing his office and the Constitution.

Dr Mumba said at a media briefing in Lusaka yesterday that if there was anything wrong Mr Banda had done while in office, it should be pursued through constitutional provisions.