JAKARTA. The National Police's counterterrorism unit Densus 88 and Jakarta Police arrested a man suspected to be the perpetrator of a blast in Alam Sutera Mall on the outskirts of Jakarta on Wednesday.

Kompas.com reported that Sr. Cmr. Martinus Hukom, Densus 88 chief, confirmed that a man with initials LO was arrested in Banten Indah Permai housing complex on Wednesday afternoon.

He said the alleged perpetrator was an expert in information and technology (IT) who worked in the Alam Sutera area in Tangerang, not far from the mall.

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Separately, detective unit chief at the Jakarta Police Sr. Cmr. Khrisna Murti said that there were four bomb attempts conducted by LO.

"There were four attempts, two exploded and another two did not," he said as reported by kompas.com.

LO was also allegedly involved in a blast in the same mall on July 9.

Police arrested LO and confiscated evidence of an active bomb, which had been taken apart by the police's Gegana bomb squad.

"The Jakarta Police chief [Insp. Gen. Tito Karnavian] would announce the details," Krishna said, adding that police are conducting further investigations into the suspect's motives.

The blast took place in Mall Alam Sutera at noon in an employees' toilet and injured one person. (rin)