SINGAPORE: Police said they are investigating the recent cases involving unknown substances left on seats in public areas.
A nurse was warded on Thursday with a burn injury, after sitting on what is believed to be acid, on an SMRT train.
On April 22, a teenager was burnt after sitting on an unknown substance at a bus stop at Bukit Batok.
Police told Channel NewsAsia they are not ruling out that these two cases could be linked.
They said they are determined to bring the perpetrators to justice. - CNA/ac
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