Borussia Dortmund signs Alexander Isak from Swedish club AIK

DORTMUND, Germany (AP) — Borussia Dortmund says it has signed 17-year-old forward Alexander Isak from Swedish club AIK.

The Bundesliga team says it signed Isak on a long-term contract, but didn't elaborate on how many years.

Isak scored for Sweden in the 6-0 rout of Slovakia on Jan. 12.