"Several companies have been investigated in connection with the alleged tax mafia," spokesman for the National Police Headquarters Chief Commissioner Boy Rafli Amar said on Monday.
But he stopped short of revealing the names of the companies. He said two officers of the companies were being questioned.
"Our investigators have conducted the investigation since three weeks ago," he said.
The companies were investigated in connection with money worth Rp28 billion in Gayus`s bank accounts, he said.
Asked about the allegation that three companies owned by Bakrie Group, Kaltim Prima Coal (KPC), Arutmin and Bumi Resources, had bribed Gayus, Boy refused to comment.
"The police have also written to the Directorate General of Taxation to disclose the tax mafia," he said.
However, the police were still waiting for a reply from the office, he said. (*)
Editor: Kunto Wibisono
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