SINGAPORE: The psychiatrist for law professor Tey Tsun Hang, who is accused of corruption, said his patient was under exceptional stress in April last year.
Testifying in court on Wednesday as a defence witness, Dr Tommy Tan said this was why Tey was diagnosed with acute stress disorder.
But prosecutor Andre Jumabhoy pointed out that the duration of Tey's symptoms of acute stress disorder did not comply with international classification of the condition.
Dr Tan agreed but said he felt that the guidelines were interpreted wrongly.
At the start of the trial, the chief District Judge cancelled the warrant of arrest made out to Dr Tan.
The judge said the warrant was no longer necessary since Dr Tan has turned up in court.
On Tuesday, the judge had issued a warrant of arrest for Dr Tan after he failed to turn up in court to give evidence, despite being subpoenaed.
Dr Tan told the court on Wednesday that he was not "subpoenaed properly" as the defence did not serve the letter to him directly.
He added that he only read the letter of subpoena on Monday night.
Senior counsel Peter Low begged to differ, saying the doctor was served the subpoena properly in March, before the second tranche of the trial began.
Tey, 42, faces six counts of corruptly obtaining gifts and sex from his former student Darinne Ko in return for giving her better grades between May and July 2010. - CNA/de
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