Jakarta. The Corruption Eradication Commission, or KPK, announced on Thursday that it has named 10 suspects in the ongoing corruption investigation at the railway directorate, following the arrest of 25 people during coordinated operations in four cities earlier this week.

The 10 suspects include six employees of the railway directorate and four businessmen, KPK deputy chairman Johanis Tanak told a news conference at his office in Jakarta.

"Based on our interrogation of the accused and preliminary evidence, the KPK came to the conclusion that briberies have occurred in railway development and maintenance projects at the Transportation Ministry’s railway directorate and named 10 suspects," Johanis said. 

The preliminary investigation indicated that the six railway officials have allegedly accepted at least Rp 14.5 billion in kickbacks from companies that won projects from the directorate, he said.

"This is a developing case and the KPK will continue to investigate," Johanis said.

The identities of the suspects are as follows:

1. Harno Trimadi, director of railway infrastructure 
2. Bernard Hasibuan, an employee at the railway technical office in Central Java
3. Putu Sumarjaya, head of the railway technical office in Central Java
4. Achmad Affandi, an employee at South Sulawesi’s railway management office
5. Fadliansyah, an employee at the railway infrastructure maintenance division
6. Syntho Pirjani Hutabarat, an employee at the railway technical office in West Java
7. Dion Renato Sugiarto, CEO of Istana Putra Agung
8. Muchamad Hikmat, CEO of Dwifarita Fajarkharisma
9. Yoseph Ibrahim, former CEO of KA Manajemen Properti
10. Parjono, vice president of KA Manajemen Properti

The alleged briberies have occurred during double-track railroad construction in Solo, Central Java, railroad construction in South Sulawesi, and railway construction projects in Cianjur, West Java, according to data from the anti-graft agency.

The suspects have allegedly fixed the bidding process for the projects to get the winning bidders in their favor who agreed to pay them up to 10 percent of the project value, Johanis said.