Pheu Thai MP Prompong Nopparit on Friday asked the Department of Special Investigation (DSI) to speed up its probes into six cases involving members of the opposition Democrat Party.
Prompong: Submitted information on graft
Among the cases are the police station construction contract, Bangkok Metropolitan Administration's decision to hire BTSC to operate the elevated rail network and the 5.3-billion-baht procurement of learning equipment for vocational schools.
Mr Prompong said he also submitted information involving the construction of police apartment blocks to the DSI to investigate whether corruption was rife in the project.
He said the 3-billion-baht contract to construct police apartment blocks had been awarded to PCC Development and Construction Co, the contractor of the police station scheme.
He said the company sought to extend the contract four times, and after three years and four months the project was not yet complete.
He said he also asked the agency to investigate if there were similar irregularities in other regions.
DSI chief Tarit Pengdith said the agency had already forwarded its findings on the police station scheme to the National Anti-Corruption Commission.
He said the DSI had also set up a committee to question Democrats Abhisit Vejjajiva and Suthep Thaugsuban over the merger of the police station and police apartment construction contracts.
The scheme was launched in March 2011 when Mr Suthep was supervising the national police and Mr Abhisit was the prime minister. Most of the structures were left incomplete and abandoned.
According to Mr Tarit, the DSI had completed its probes into the other cases, except for the one involving cash donations by Democrat MPs to the party.
He was referring to a case in which the DSI accused dozens of Democrat MPs of violating sections 57 and 71 of the Political Party Act regarding donations to political parties.
The Democrat MPs had authorised the secretariat of the House of Representatives to deduct 20,000 baht from their salaries and to transfer the money to the party's account.
Mr Tarit said the DSI was still investigating the case.