According to my understanding: Your father has acquired the property in his own name as co sharer, with other shaerers being his own children, he died leaving debts.
The simple answer is YES: His estate is liable for the attachment or some other court proceedings and the creditors must be satisfied. They can not proceed on your assets as you have separated unless, he has incurred the debts for your neessities like education of sending to higher education and sich bank loans for welfare of the family.