Article 241 of Code of Civil Procedure

A creditor may effect an attachment in his own hands upon what he owes to his debtor. This shall be by notice to the debtor containing the particulars required to be stated in the attachment notification document. Where the attachment is ordered by a judge, the attaching creditor must, within the eight days following service of notice of the attachment on the debtor, bring an action before the competent court to establish the right and the validity of the attachment; otherwise, the attachment shall be deemed never to have existed.