MUENSTER, Germany (AP) — Prosecutors say they still have no indication why a 48-year-old man drove a van into a crowd of people in the western German city of Muenster, killing two and injuring 20 before he shot himself to death inside the van.

In a joint statement with police, prosecutor Martin Botzenhardt wrote Sunday that "as of now, we don't have any leads regarding a possible background for the deed."

Authorities have identified the two fatalities of Saturday's crash as a 51-year-old woman from the county of Lueneburg and a 65-year-old man from the county of Broken. Their names weren't given as is customary in Germany.

Local media have identified the perpetrator as a German living in Muenster who had been suffering from psychological problems, but police wouldn't confirm those details.