Ukrainian student Pavlo Lapshyn was "operating alone" and was not part of a far-right group, West Midlands' Assistant Chief Constable Marcus Beale said outside the Old Bailey.
He said: "This individual was unusual and acting alone".
A Ukrainian student has admitted stabbing an 82-year-old Muslim pensioner within five days of arriving in the UK.
Police have released images showing Ukrainian student Pavlo Lapshyn preparing for and carrying out attacks in the Midlands.
A timeline leading up to the conviction of Pavlo Lapshyn, who murdered pensioner Mohammed Saleem and set bombs off outside mosques.