According to China Press, his apparition was spotted on the fifth floor of Plaza Masalam, where his remains were found, and on the 14th floor, where the MACC office is located.
The report said a security guard and two MACC officers had bumped into the spectre.
The sightings took place sometime in October, more than two months after the 30-year-old's death.
The security guard, who wished to remain anonymous, said he did not see Teoh's face, but the apparition was clad in the same clothes which the deceased had worn when he came to the MACC office.
"I saw his dead body after the fall. I am sure that it was Teoh even though I could only see him from the back," he said, adding that the incident happened around 6.30pm.
Recalling the spine tingling encounter, the security guard said he went to the washroom located on the fifth floor where he suddenly heard footsteps. The other officers were not on duty at the time.
"I had a strange feeling. Usually at that time, nobody would be around. So I walked out of the toilet... then I saw a man in front of the lift, he was wearing a black coat and white pants," he said.
At that point, it did not strike the security guard that this could be Teoh's spirit.
"I asked where he was going as no one was upstairs. He just answered 'I am going upstairs', the lift door opened and he went in.
"That was when I thought it could be Teoh, so I rushed to the security room to check the CCTV and saw there was nobody in the lift," he said.
The security guard also related the experience of a MACC officer.
"He was sitting on the sofa watching TV when he suddenly felt something biting his neck, and when he checked, he found a red mark on his neck.
"When he was sitting in the reception area, he saw Teoh walk out from the office.
"Then the officer felt as if someone was pulling his leg. He got scared and rushed out," he said.
Following this, the security guard said the officer requested for a transfer to the MACC headquarters in Putrajaya and "never came back."
Teoh, who was the former aide to Selangor exco Ean Yong Hian Wah, was found dead after a marathon questioning session by MACC officers which dragged into the wee hours of the morning.
Although the official version is that Teoh had committed suicide, his family refused to believe that the father to be, who was slated to get married the next day, would take his own life.
Following a massive public outcry, the government ordered for an inquest to be held to determine the cause of death.
Teoh's remains were exhumed for a second post-mortem after renowned Thai pathologist Porntip Rojasunand made the startling revelation that there is an 80 percent probability of homicide.
The inquest continues on Dec 9.
Geronimo's Take : Normally when I come across a ghost story, I always find that sense of humour attached with it. But when I read about TBH's "ghost" appearing in Plaza Masalam, all I could think of was, "the chicken has finally come home to roost". The head of MACC, Ahmad Said, said he was not under any political pressure to resign (read article here). Then why the haste when he is just four to five months away from his official retirement? Could he have also encounter TBH's ghost that he is now scared off his wits to resign for his own good? I wonder whether Altantuya will also go a-haunting on you know who, and maybe to later resign as the PM of the country? Food for thought, eh?