A man who vandalised property at the Corrupt Practices Investigation Bureau, and threatened and hurt one of its officers was jailed and ordered to be caned on Thursday for a series of offences.

Loh Chien Wei had also bribed a cop by entertaining him at a nightclub; abetted one of his co-conspirators to falsify accounts; and committed traffic-related offences.

The 37-year-old former tattoo shop operator admitted to 11 of 24 charges. He was sentenced to a total of 12 months and one week in jail, and ordered to be given six strokes of the cane.

He will also be banned from driving for 12 months, for driving without a licence in 2007 and 2012.

The court heard that he had been on the run for more than five years after failing to report to CPIB as part of his bail conditions. He was arrested on June 19 last year.

Loh came to know Bedok Police Division's then staff sergeant Tan Chee Kwong in 2006.

After several outings, Loh asked the cop to tip him off if there were any raids in Geylang, as he was selling cough syrup illegally in the area.

Staff Sgt Tan, who has been dealt with, informed him of raids on two occasions.

In May 2007, Loh treated the cop to free drinks and entertainment at anightclub, which cost $482.

When Loh was interviewed by CPIB's principal special investigator Bay Chun How on July 17, 2007, he threatened all its officers involved in investigating his case, as well as their families. He also threatened to burn the CPIB building and deface it.

Then Loh threw a chair at Mr Bay who was hurt when he used his arm to deflect it.

Loh next lifted the table and tried to swing it towards Mr Bay who defended himself by kicking the table. This caused Loh to lose his grip and the table fell and broke into pieces. The damage cost $190.

On June 19 last year, after his latest arrest, Loh was being interviewed at CPIB when he kicked the reinforced table in front of him. This caused the table, which was bolted to the floor, to bend. Other parts of the table were also damaged. The cost of repairs came up to $700.

The court heard that in July 2007, Loh was also in a conspiracy with three others to falsify a promissory note stating that the principal loan taken by a borrower was $35,000 at 18 per cent interest a year, when in fact it was $25,000 at an interest of 10 per cent a month.