A terrorist firebombed a Protestant church in Indonesia Sunday, injuring several children and killing one.
Juhanda, also known as Jo bin Muhammad Aceng, a repeat-offender charged with terrorist activities, tossed a Molotov cocktail at a group of small children playing in front of Oikumene Church in Samarinda. Four children were injured in the attack, TIME reports.
One of the children, a 2-year-old girl named Intan Olivia Marbun, suffered severe burns, triggering serious respiratory problems. She passed away early Monday morning, BBC revealed.
The attacker was wearing a shirt which read “Jihad for Life.” He is linked to pro-Islamic State (ISIS) groups operating domestically.
Juhanda was sentenced to three and a half years in prison for his involvement in a 2012 bomb plot against a cultural center. He was arrested again in 2014, carrying an ISIS flag and reportedly trying to find and murder his wife.
President Joko Widodo is calling for a thorough investigation into the attack on the church.
Terrorism has become a more serious problem for Indonesia, the world’s largest Muslim majority country, in recent months. A Buddhist temple was bombed Monday, and that same day, a Catholic church received a bomb threat called in over the phone.
The country’s first ISIS attack occurred in Jakarta in January. An ISIS-crazed suicide bomber attempted to blow up a crowded Catholic church in August; however, the bomb malfunctioned, and only the attacker was injured. A suspected ISIS supporter stabbed three police officers in Jakarta in October.
The most recent attack stirs fears of domestic radicalism in Indonesia, which is reportedly home to hundreds of ISIS followers, Reuters concluded.
“This case has opened our eyes that [the counter-terrorism agency] BNPT needs to improve its de-radicalization program,” legislator Eva Sundari said in a statement, according to TIME reporters.