A senior CID police officer today confirmed that Pradip Nandi (18) and Jhantu Karmakar (21) were arrested from the factory's Dum Dum premises last night.
Eight persons had already been arrested yesterday for their alleged involvement in the incident.
Last week, five persons were arrested for their link to the incident.
The CID has also summoned Jessop owner Pawan Ruia in connection with the alleged theft and arson at the factory and asked him to appear tomorrow.
Former workers of the factory alleged that the fire was part of a "conspiracy by a third party", following which the West Bengal government ordered a CID probe into the mishap.
The state government has also registered a complaint against Jessop owner Pawan Ruia at Dum Dum police station.