No arrests or other details related to the incident have been reported.
Bashir's lawyer told CNN that the president had not participated in the breakout attempt. "We've met him twice since his arrest and he has not once mentioned this alleged attempt, nor has he been accused by any authority of involvement," said Hashem Abu Bakr Al-Gaaly.
The security around the autocratic former ruler was increased, which was fully flaunted on Monday when Bashir arrived at the Justice and Law Institute with a convoy of military vehicles equipped with heavy machine guns. The trial was transferred to the Institute because it is near Kober and easier to secure, Al-Gaaly told CNN.
During the two-hour hearing, dozens of Sudanese paramilitary forces surrounded the court, and armed vehicles closed the area off.
The gray-haired former ruler who appeared in a court cage pleaded not guilty of possessing foreign currency, being corrupt and receiving presents illegally.
CNN previously reported that bags of cash had been found in Bashir's home after being dropped off.
A state investigator approached the court for the foreign money that Bashir allegedly distributed as "donations and gifts to the poor," including $ 25 million from Saudi Arabia's crown prince Mohammed bin Salman. The investigator also said that Bashir claimed to have received $ 35 million from the late Saudi King Abdallah bin Abdelaziz al-Saud and $ 1
CNN has reached Saudi Arabia and the UAE, but has not received a response.
Bashir's lawyer denied the allegations and told CNN that the deposed president had not used the money for his personal gain.
"We reaffirm that the former president has not even benefited from a dollar of this sum and neither do you even have a foreign currency account," Al-Gaaly said.
After three decades in power, Bashir was arrested and ousted from his post in a military coup. He was released after months of protests, with thousands taking to the streets in northeastern Africa.
Since his fall, Bashir has been in the same notorious Khartoum Prison, where generations of political dissidents were detained under his care.
Bashir's four months in Kober Prison were interrupted by an attempted escape from prison, his transfer to a warehouse, an unannounced visit by his previously unproven second wife, and a mosquito infestation.
According to a police report, security forces attempted to break into jail on June 4 demonstrators, "villains" within the regime, to free Bashir and other imprisoned members of the regime.
Taking advantage of this chaos and instability, Bashir loyalists descended upon Kober to free the deposed leader, but they were thwarted, police said.
The attempt exacerbated the concern of the Sudanese opposition that the apparatus which Bashir still worked. This concern has underpinned the events that have taken place since then, including the call for the removal of the "deep state" that Bashir left behind.
Following his failed escape, Bashir was housed in an upscale warehouse on the banks of the Nile, part of Khartoum not far from the former residence of the President. The security-encamped camp was once home to former intelligence chief Mohamed Atta al-Moula.
After a month, he was returned to Kober with even greater certainty and the amenities he requested.
Infested with mosquitoes
None of these amenities was able to protect him His attorney Hashem al-Gaaly told CNN that Bashir had been affected by a plague of enduring mosquitoes.
"The prison conditions are bad, it is unclean and full of mosquitoes," al-Gaaly said.
However, Bashir is being held in better conditions than other prisoners and detainees, a senior security source told CNN.  Unlike other inmates, Bashir's 3×3 meter cell has two refrigerators, air conditioning, and a bed, the source said.
While Eid al-Adha, one of Islam's most sacred commandments, is known as the "Sacrifice Festival," Omar al-Bashir's second wife joined the office of deposed Sudanese President prison cell for a visit along with their young children. Widad Babiker Omer, who had fallen into disfavour by the Sudanese revolutionaries as "Marie Antoinette" for their swanky editions and fall, had not been seen since the coup. The cell in the notorious prison was once the home of the late political leader Hassan Abdallah al-Turabi, who led the 1989 coup d'état that brought Bashir to power before the two joined forces later argued.
Bashir is being held next to death row inmates in the political section of the prison, traditionally overseen by security and intelligence services.
"Psychologically, Bashir is in good shape," the source said CNN. "He was hit by his mother's death a few weeks ago because the authorities did not allow him to visit her at the hospital when she died, and he was only allowed to go to her body before the funeral."
Bashir had given an extensive escort to her funeral and voiced concerns from commentators on the ground that he had received special privileges.
"He is the most relaxed of all the old guards in prison," the source said. "He has the impression that he does not care about anything."
This story has been updated to correct the name of the Emirati leader who reportedly gave Bashir $ 1 million.