BERLIN — German authorities say an Afghan man, who had served prison time for arson, fatally stabbed a five-year-old Russian boy at a home for asylum-seekers after an apparent argument about noisy children.

The 41-year-old assailant also wounded the boy’s mother in Saturday’s incident in the Bavarian town of Arnschwang. He died after being shot by police officers.

Police said Tuesday they have interviewed the mother and determined that the assailant had apparently been angry over noise made by playing children.

They also say the assailant was sentenced to five years and 10 months in prison in 2009 for arson. He was ordered to stay at the asylum home after completing his sentence, and wore an electronic foot tag to determine his whereabouts.