If I’m not mistaken, Bandera was interned at a German concentration camp when the atrocities took place.
There were two Lviv pogroms soon after each other, from 30 June to 2 July, and from 25 to 29 July, 1941.
Bandera was arrested on 5 July 1941. So he probably was responsible for the first one.
EDIT:
Seems like he was out of Ukraine even during the first one.
It seems somewhat more complex, according to this link “Bandera was in occupied Poland when on June 30, 1941, his comrades proclaimed an independent Ukrainian state in Nazi-occupied Lviv — and the Germans banned him from traveling to Ukraine.”
There were two Lviv pogroms soon after each other, from 30 June to 2 July, and from 25 to 29 July, 1941.
Bandera was arrested on 5 July 1941. So he probably was responsible for the first one.
EDIT:
Seems like he was out of Ukraine even during the first one.
It seems somewhat more complex, according to this link “Bandera was in occupied Poland when on June 30, 1941, his comrades proclaimed an independent Ukrainian state in Nazi-occupied Lviv — and the Germans banned him from traveling to Ukraine.”