Indonesian police said Monday that one of four young children injured by an Islamic militant’s attack at a church on the island of Borneo has died.

East Kalimantan police spokesman Fajar Setiawan said 2-year-old Ade Intan Marbun died from complications after suffering burns to more than three quarters of her body.

“It affected her respiratory system and efforts to save her failed and she died early Monday,” said Setiawan.

The attacker, identified by police as a 32-year-old former terror convict from the West Java town of Bogor, threw a Molotov cocktail from a motorcycle as he rode past Oikumene Church in Samarinda, the provincial capital of East Kalimantan province, on Sunday.