About 100 people were at St Lidwina Church in Sleman, Yogyakarta province, when a man wielding a metre-long blade burst in and began lashing out at worshippers.
A man with a sword allegedly slashed at church-goers as they prayed in Indonesia, injuring five people, CNN reported.
According to reports, the suspect also damaged statues of the Virgin Mary and Jesus Christ, as well as destroyed some books in the church.
People fled through another door as the attacker ran amok inside the church.
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"Everybody started panicking and screaming".
The man was shot and wounded by police and taken to hospital following the attack on the island of Java.
"We haven't found leads to terrorism yet and it doesn't seem to be terrorism", he said, adding that police also had found no evidence the attack was religiously motivated against members of Indonesia's small Christian minority. "I was scrambling to save my wife and children", Mr Cahyo was quoted as saying by Agence France-Presse. Police opened fire on the attacker, who's been hospitalized, it said.
He charged at one of the officers with his sword and was shot.
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The spokesman said Mr Moon also called for a quick resumption of dialogue between the United States and North Korea. Kim Yo Jong is the sister of North Korean ruler Kim Jong Un and is a key advisor to her brother.
All four people hurt in the attack, including the parish head, Father Karl-Edmund Prier, were taken to hospital, where they were treated for their injuries.
Similar incidents have occurred in Indonesia in recent years.
Several children were injured after a man threw Molotov cocktails at a church during a Sunday service in 2016.
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