BERLIN (AP) — Prosecutors in Germany say they are considering whether to open an investigation into the Volkswagen emissions scandal.

The prosecutors’ office in Braunschweig, near VW’s Wolfsburg headquarters, says Wednesday that it is considering opening an investigation against employees of VW who might be responsible. It didn’t specify any names, and no one has yet been identified as being to blame for the manipulation of software in diesel vehicles.

Prosecutors say they are collecting information after receiving “several” criminal complaints. Anyone can file a criminal complaint in Germany, and prosecutors have to examine whether to act on them.

Lower Saxony state’s justice ministry says it couldn’t give any information on the number or contents of the complaints.