The girl was unsteady on her feet and appeared to be oblivious to her surroundings, a sign of possible drug intoxication, says HSA. SINGAPORE: A 13-year-old girl is assisting with investigations after she was spotted using an e-vaporiser that was laced with an anaesthetic outside the State Courts, the Health Sciences Authority (HSA) said on Tuesday (May 13). HSA was alerted to the case on Apr 24 after the girl had "behaved erratically" while vaping in public outside the courts in Chinatown. "