SINGAPORE, May 27 -- A Singapore court has handed a record three-year jail sentence to a 47-year-old dual Singaporean-Indonesian citizen for evading mandatory National Service (NS) obligations for more than two decades, in what prosecutors described as one of the most serious cases of enlistment default to date.

According to CNA, Edmond Yao Zhi Hai was sentenced yesterday after the court found that he had failed to fulfil both his full-time NS duties and subsequent reservist obligations for 21 years and nine months.

District Judge James Elisha Lee said Yao's conduct fell within "the worst category of NS defaulters", noting that he had effectively avoided the entirety of his military obligations.

The sentence is the longest jail term im...