The two Indians, whose names were withheld, were taken away for questioning after Assistant Police Commissioner General Pol Lt Gen Prawut Thawornsiri led some 20 police and troops to search the Maimuna Garden Home apartment in Minburi at 9 pm Sunday.
The two Indians are staying in the room next to the one where police found bomb making materials. A foreigner who lived at the room and a Thai woman who rented the room for him are now wanted under arrest warrants.
The source said the two Indians were taken to a military camp for questioning.