Bayern Munich have overcome the dismissal of their French playmaker Franck Ribery to beat Olympique Lyon 1-0 in their European football Champions League semi-final first leg .
The hosts won a bad-tempered clash with a deflected second-half goal from the Dutch striker Arjen Robben after Ribery was sent off for stepping on the Lyon forward Lisandro Lopez's ankle in the 37th minute.
French authorities questioned Ribery this week as a witness in a prostitution investigation.
Lyon were also reduced to 10 men nine minutes into the second half after Jeremy Toulalan picked up two bookings in quick succession.
