Two of the four teachers detained in connection with the leak in Primary School Achievement Test (UPSR) examination papers will be remanded if the investigation papers cannot be completed within 24 hours.

Kuala Lumpur CID chief SAC Gan Kong Meng said two other teachers were released on police bail after their statements were recorded.

"Of the four arrested, two are still being detained for further investigations and if this cannot be finalised in the next 24 hours, they will be remanded in Putrajaya on Monday.

"Meanwhile two more have been released on police bail after their statements were recorded," he told Bernama when contacted here yesterday.

Police detained four teachers, aged between 30 and 54, in raids conducted in Penang and Parit Buntar, Perak yesterday in connection with the leak in UPSR.

Following the leak, the English 014/1 and 014/2 papers were cancelled after students had sat for the exam on Thursday while the Science 018, 028 and 038 papers were also postponed before they sat for the exam on Thursday.

Click here for UPSR 2014 photos

The Examination Syndicate (LPM) has fixed Sept 30 as the new date for students to resit the papers.

[Infographic]: Chronology of leaked UPSR2014 exam papers

Deputy Prime Minister Tan Sri Muhyiddin Yassin had also announced that Examination Syndicate chief Dr Na'imah Ishak and its deputy director of operations, Dr Wan Ilias Wan Salleh were suspended from their duties with immediate effect until the investigations are completed.