Whether officer appointed under GST law has power to detain / seize the goods? When such detention or seizure could be undertaken

Where any person transports any goods or stores any goods while they are in transit in contravention of the provisions of the GST Act or rules made there under, all such goods and the conveyance used as a means of transport for carrying the said goods and documents relating to such goods and conveyances shall be liable to detention or seizure.

(ICAI FAQ PUBLICATIONS 06-09-2017 Detention, seizure and release of goods and conveyances in transit : FAQ NO. 14)