Photo of the 17 packets of heroin weighing approximately 4.9kg found hidden on the bus. These drugs are estimated to be worth S$740,000. -- PHOTO: CNB By Fiona Low Almost 5kg of heroin, worth about $740,000 was seized at Woodlands checkpoint on Thursday. A 34-year-old Malaysian man was caught attempting to smuggle the drugs into the country by hiding them in bus seats. The 31-year-old bus driver on the Malaysian-registered vehicle was alerted by two passengers who noticed a man on the bus behaving suspiciously by pressing on the seats of the bus. Upon reaching Woodlands checkpoint at about 10pm, the bus driver conducted a check and found three black bundles hidden in one of the seats on the bus. He then informed the authorities.