Man dies after police use Taser device on him while breaking up fight in Maryland . Another man died in Maryland 2001 after being shot with Taser gun . Amnesty International blames four deaths since last week on police stun guns . A 20-year-old man died Sunday after being shot with a Taser device during a scuffle with a sheriff 's deputy in Maryland , a spokeswoman for the Frederick County Sheriff 's Office said . Amnesty International says many deaths involving stun guns have other causes .
Man dies after police use Taser device on him while breaking up fight in Maryland . Another man died in Maryland 2001 after being shot with Taser gun . Amnesty International blames four deaths since last week on police stun guns . Amnesty International says many deaths involving stun guns have other causes .