Criminal Investigation Bureau Commissioner Hou You-yi (
"We have arrested everyone who might have been be able to help him financially. Our investigations and testimony from people who had helped him confirm that he is gradually running out of money," Hou said.
"We believe that he will do something soon, since he is running out of money," Hou said. "That is also a sign that the day on which we will arrest him is approaching."
While the police manhunt for Chang continues in mountainous parts of Chiayi and Tainan counties, investigators are also trying to persuade members of his family to encourage Chang to turn himself in.
However, officials of the Tainan County Police Department's Pai-ho precinct would not confirm that they are trying to get Chang's family to persuade him to come forward.
"I can only tell you that we have not made any significant progress as of now," said Lieutenant Yang Ching-fu (楊清福) of the department's criminal investigation division.
According to Hou, the police strongly believe that Chang is hiding somewhere in Chiayi or Tainan county, because he grew up there and is good at hiding in the mountains.
Reliable sources have told the police that Chang is still trying to blackmail more victims with the help of his friends and relatives.
Chang is wanted for his alleged role in several kidnapping cases involving millions of dollars in ransoms.
He is thought to be heavily armed with automatic weapons and grenades, although he has never injured anybody during the kidnappings in which he has been implicated.