Selebi is facing two counts of corruption and defeating the ends of justice, related to payments of at least R1,2 million he allegedly received from Agliotti, murdered mining magnate Brett Kebble, and ex-Hyundai boss and mining businessman Billy Rautenbach.
"My Lord, it's not easy being here. I didn't want to be here to testify against my then friend and the accused," said Agliotti of his testimony in the former police chief's corruption trial.
"Do you want a few moments to compose yourself?" asked Judge Meyer Joffe.
The court adjourned briefly, with State prosecutor Gerrie Nel walking over to Agliotti, who had removed his glasses and was wiping tears from his eyes.
Selebi walked out of court, remarking to reporters: "He needs a box of tissues for tomorrow", referring to Agliotti's cross-examination.
Agliotti also explained why he paid the former top cop about R1 million in cash and luxury gifts.
"We were friends... I needed him in my business dealings... I needed him close to me... I needed him for purposes of (business rivals) the Kebbles. That's why I paid him," he told the court on Thursday morning.
Businessman Rautenbach is also set to testify in the high profile trial, which opened on Monday and has had several dramatic moments. On Monday it was postponsed to Tuesday after Selebi dropped a bombshell by claiming that former National Prosecuting Authority head Bulelani Ngcuka and Vusi Pikoli were guilty of corruption.
Selebi said he was victimised because he knew about this.
He also claimed that Ngcuka attempted to extort a bribe from former Hyundai boss Rautenbach and that Pikoli's wife received money from slain Kebble's companies.
"I am going to grant the request," said Judge Meyer Joffe, after prosecutor Gerrie Nel requested that the trial be stood down until 9.15am on Tuesday.
Selebi has maintained his innocence, saying that the Scorpions - which were part of the NPA - wanted to ensure his downfall in a desperate bid to stay alive and prevent being shut down.
Glenn Agliotti has testified about how he had Jackie Selebi on call to assist him with everything from a supermodel's blackmail problem with "Bad Brad" Wood to a break-in at a friend's flat.
In his second day of testimony about his "generally corrupt relationship" with the former national police commissioner, Agliotti also claimed that Selebi had shown him three top-secret reports in which suspicions about the witness' potential involvement in criminal activities were raised.
Speaking after Wednesday's court hearing, Selebi appeared unperturbed by Agliotti's evidence, in which the convicted drug dealer also claimed he bought size seven designer shoes for former president Thabo Mbeki on Selebi's behalf.
Selebi said "cross-examination will really be the thing here... wait until the cross-examination". He earlier stated that Agliotti could not look at him, because "he is telling lies".
After the State won its legal bid to have its self-admitted "embarrassing" date errors in its indictment against Selebi corrected, Agliotti started giving evidence about what he claimed the former police chief had done in return for the R1 million in cash and gifts he had given him.
According to Agliotti, Selebi:
" Showed him a top secret UK intelligence report about his alleged cocaine smuggling activities and warned him that he was being monitored by the British authorities.
" Gave him a copy of an email sent to the National Prosecuting Authority by Selebi's nemesis, Paul O'Sullivan, containing allegations - subsequently not persisted with by the State - that convicted drug dealer Clint Nassif had paid Selebi a R50 000 cash bribe. Agliotti claimed Selebi told him to give the e-mail to his lawyers because it would discredit the NPA by showing that they relied on O'Sullivan for helping with the investigation.
" Showed him an underlined section in a South African intelligence report which stated that businessman Jurgen Kogl had claimed that the Kebble family were "paying Selebi" and then asked him to find out who Kogl was. Agliotti said he did so.
Agliotti's evidence about the e-mail provoked the greatest response from Selebi's senior counsel Jaap Cilliers, who protested that the State's own witnesses, including Nassif, had shown that claims contained in the document were "a bunch of lies".
In an apparent bid to demonstrate how Agliotti effectively kept Selebi on retainer, chief prosecutor Gerrie Nel questioned him about the occasions when he had called on the police chief for help.
Agliotti testified that Selebi had agreed to meet Nassif over international billionaire Eyhab Jumean's claims that he was being blackmailed for '500 000 by former Big Brother contestant Brad Wood - the former boyfriend of his then wife supermodel Gina Athans. After hearing of the alleged extortion effort, which Wood has denied, Selebi said he would see to it that the incident was investigated.
In another incident, Agliotti said he had called Selebi after a flat in the complex he was living in, located 200 metres from the Sandton police station in Johannesburg, was broken into for the umpteenth time. "I called the accused from the scene and asked him please to assist, explaining that this had happened yet again in such close proximity to the Sandton police station.
"When I called the accused, he asked who was the investigating officer on the scene. I inquired and it was a police reservist by the name of (Aubrey Morris) Shlugman.
"I spoke to Shlugman and handed the phone to him to speak to the accused," he said.
Agliotti also described how he had gone shopping with Selebi and paid for a pair of shoes for Mbeki. He recalled the size as seven and claimed Selebi said the then president had "small and broad" feet.
