A breakthrough was made on Tuesday in the case of the countrys largest armored car heist when police recovered approximately NT$11.8 million in cash from a suspects home in Beitou, and arrested a woman who admitted to having prior knowledge of the robbery.

An amount of over NT$45 million is still missing, the police said. The main suspects Lee Han-yang and his younger brother Lee Chin-tsan, both sent back from China last week under the 1990 Kinmen Accord, have conflicting stories on the moneys whereabouts, said the police.

Lee Han-yang, an ex-police officer who worked for the security company Group 4 Securicor-Taiwan, allegedly stole NT$56 million from a company vehicle in Taipei on January 2 by drugging his work partner and then making off with the cash. The police believe the suspect had help in carrying out the robbery before he fled to China with his brother Lee Chin-tsan, also a former police officer.

The woman arrested on Tuesday, Lin Bi-chu, is the wife of another suspect, Hsieh Cheng-chiu, who is reportedly in China and still on the run. During interrogation, Lin confessed that she knew about the heist and that her husband, along with another two accomplices, Chiu Wei-sheng and Liu Wen-lung, had brought home a suspicious looking bag on the night of the robbery.

The police reported that Lin claimed she did not know the bag was filled with stolen banknotes. However, they found NT$200,000 in cash in her home during a search.

Lin reportedly told the police that some of the money was hidden in the home of another suspect, surnamed Wu. The police followed the lead and discovered over NT$16 million in cash, stashed away neatly in two separate shoe boxes in the storage room of Wus home, said Chang Chiang-liang, the deputy chief of the Sungshan precinct.

Police suspect that the rest of the money might be in the possession of Liu and Hsieh, both of whom are still at large, reportedly in China.