What is the legal ruling regarding the action of the electricity workers who connected current to a stolen wire to kill the thief? Is this considered premeditated murder? And do they owe anything religiously if this was an unlawful killing? What is the ruling on offering condolences to the family of a thief who died by electrocution? And is it permissible to offer condolences to the family of someone who died with an apparent bad end, such as theft, adultery, or alcohol consumption?

If an electrician intentionally connects an electrical wire to kill a thief, he has committed a grave error and an enormous evil, because the punishment for theft is not death. Furthermore, the hadd (prescribed punishment) for theft is not applied to someone who steals a wire that is not secured and is intended for public use; rather, he should be subject to a discretionary punishment (ta'zir) and his hand should not be cut off. Killing an aggressor is not permissible unless the aggression cannot be repelled except by killing. Moreover, this wire could cause the death of someone who does not intend to steal.

The second question requires more detailed information and should be referred to a judge.

As for the third question, offering condolences to the family of the deceased is a recommended sunnah, even if the deceased was a thief.