Jakarta. The office of the Corruption Eradication Commission, or KPK, was vandalized on Monday (09/05) during a rally by the Islamic Students Association, or HMI, demanding the resignation of commissioner Saut Situmorang following comments made about the organization.

Hundreds of HMI members pelted the KPK building with stones and vandalized park benches in front of the offices in a rally against antigraft commissioner Saut Situmorang.

Saut recently came under fire following comments about HMI alumni made on a television talk show over the weekend. The former intelligence agent, who was once posted in Australia, said HMI members and alumni who take part in basic leadership training are smart students but tend to be evil and greedy in claiming seats and posts in government.

He pointed to several HMI graduates currently behind bars after being found guilty in graft cases, including former Democrat chairman Anas Urbaningrum, National Mandate Party politician Wa Ode Nurhayati, former Golkar lawmaker Zulkarnaen Djabbar and former sports minister Andi Mallarangeng.

Many of the archipelago's top leaders are HMI alumni, including Vice President Jusuf Kalla, former constitutional court chairman Mahfud M.D. and Energy Minister Sudirman Said.

However, the 57-year-old KPK commissioner has apologized for his comments saying he didn't intentionally mean to humiliate the oldest Islamic student organization.

“We believe HMI is one of many activist movements that can be a good partner [with KPK] in eradicating the corruption,” Saut said in a press conference in KPK office on Monday.

During the rally, protesters spray painted fences with slogans including "Arrest Saut," "Saut Must Be Fired" and "Saut Is a Communist Party Member."

The building's security guard post was damaged after being pelted with rocks.

Three police officers were injured during a brief scuffle with protesters while securing the rally.

Setiabudi Police chief Adj. Sr. Comr. Tri Yulianto, who handled the incident, said police have not detained or named any suspects following the incident, adding they are still investigating the case.

HMI chairman Muhammad Fauzi has reported Saut to the National Police's criminal investigation unit with defamation charge on Monday, saying “there will be no peace until the case is resolved.”

Fauzi said the HMI had requested a statement of apology from Saut, but the KPK commissioner didn't respond within two days.

Writing by Edo Karensa