BRUSSELS (AP) — Belgium's interior minister says a man with a knife shot by police in a Ghent train station was an Afghan refugee with mental problems and was not a known extremist.

Jan Jambon told broadcaster RTBF Wednesday that "there is no link to any terrorist motive. He is a known refugee, of Afghan nationality who is not thought to be radicalized."

Police shot the 28-year-old man, who was yelling outside and in the busy Ghent St. Pieters station late Tuesday, when he approached them and refused to drop a small knife he was carrying.

Ghent prosecutors' spokeswoman An Schoonjans said he was seriously injured.

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Jambon said the incident does not call into question Belgium's decision on Monday to lower its terrorism threat level after more than two years on high alert.