CIB agents took Huang Sung-ching, 36, of Taipei under custody for demanding NT$1.5 million each of three soft drinks makers.

Huang injected hydrochloric acid into a bottle of soft drinks and sent it together with a letter of extortion to each of the three makers by parcel post, CIB agents said.

He named himself “--uxiao” in the extortion letter, agents added. The letters were computer-written. Agents said the three makers reported the attempted extortion on December 19, last Wednesday and Monday.