From where to get Certified copy of Passport for W7 ITIN Renewal

[rishidev]

Hi,

I need to renew ITIN for my son.
Due to Covid situation, all TAC/IRS offices were closed. So I could not visit in-person for Passport verification.
Currently, I am visiting India for certain family emergencies.

From where should I get certified copy of my son's passport? Indian Passport office or US Embassy in Delhi?

Thanks.