JAKARTA: Police have arrested a man whom they say is responsible for an explosion in front of Oikumene church in Samarinda, East Kalimantan, on Sunday (Nov 13) morning.
The blast happened at around 10.20am local time when the suspect threw a bag believed to contain a Molotov cocktail from his motorbike.
Four children who were playing in the parking area of the church were injured.
"The man passed by the church and threw what we suspected was low-explosive cocktail bombs, causing light injuries on four children who were playing there," Head of Public Relations of the East Kalimantan regional police, Senior Commissioner Fajar Setiawan told AFP.
The motive of the attack was still unclear, Setiawan said, but the church, as well as a mosque where the man went before the incident, had been cordoned off for investigations.
According to Samarinda police chief Setyobudhi Dwiputro, the 32-year-old suspect, identified only as "J", was a resident of Bogor, West Java.
He was reportedly wearing a black t-shirt with the words, “Jihad Way of Life,” printed on it at the time of the attack.
In addition to the injuries sustained by the four children, four motorcycles were burnt in the church courtyard, Setyobudhi told local news portal Detik.com.
The suspect was also wounded, he added.
In a statement, President Joko Widodo said he has ordered an investigation into the attack, calling on the police chief to "take firm action and thoroughly investigate the perpetrator.”
Following the attack, a bomb diffusion team was deployed to clear the location of dangerous items. The explosive is also being further examined,according to Antara.