They are P. Gunasekaran, lawmaker for Negri Sembilan state, and G. Saminathan, lawmaker for Gadek in Malacca city.
DAP leader for Negri Sembilan confirmed the case, adding that he has yet to be told about reason for the arrest.
The same day, DAP Secretary General and Finance Minister Lim Guan Eng said the arrests are shocking and believed that the two are innocent.
He said DAP will provide a legal team to represent the two members who could be detained for up to 28 days for investigation.
The police said they have enough evidence to conduct the arrest.