They did it in Afghanistan:
Taliban cut off Afghan voters’ ink-stained fingers, election observers say
AUG. 23, 2009 12 AM PT
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KABUL, AFGHANISTAN — The shadowy threat circulated in city streets and village bazaars in the days before Afghanistan’s historic presidential vote: The Taliban would cut off the ink-stained fingers of those who had cast a ballot.
On Saturday, election observers disclosed that they had confirmed two such cases in the south of Afghanistan, and were investigating a third in an eastern province.
Two finger amputations took place in Kandahar province, where the Taliban movement was born. Officials asked that the district not be disclosed because it would endanger the observer who reported the grisly acts. The case under investigation was in a province bordering Pakistan’s volatile tribal areas, where many insurgent groups are based.
https://www.latimes.com/archives/la-xpm-2009-aug-23-fg-afghan-election23-story.html