The former Tamil Nadu chief minister Karunanidhi described Modi as a hard-worker and a "good friend".
In an interview to a Tamil newspaper "Dinamalar", 89-year-old Karunanidhi said, "Modi is very hard worker. This is evident from his election campaign. He is also a good friend of mine."
However, the veteran politician refused to divulge any detail regarding a possible alliance with the BJP.
He also declined to comment on BJP leader Subramanian Swamy's remark that a BJP-DMK alliance was a possibility.
"You have to ask him (Swamy) on what basis he is saying that," he said.
Interestingly, Karunanidhi has already made it clear that his party won't enter into alliance with the Congress. The DMK was once a part of the BJP-led National Democratic Alliance but later switched allegiance to the Congress-led United Progressive Alliance.
BJP has already secured an alliance with the MDMK and DMDK.
Ironically, DMK's arch-rival AIADMK supremo and current Chief Minister of Tamil Nadu, J Jayalalithaa also shares good rapport with Modi.
In December last year too, Karunanidhi had described Modi as a good person and also praised about his governance skills in Gujarat.
The BJP had also welcomed Karunanidhi's comments on Modi, but at the same time had ruled out aligning with DMK.
It will be a 'shot in the arm' for BJP, if DMK enters into an alliance with it, as it has already secured an alliance with the MDMK, DMDK and is in talks with PMK.
The "Modi magic" seems to have worked in the DMK, as according to a TOI report, DMK sources said a meeting between BJP chief Rajnath Singh and Karunanidhi is on the cards.
Even the party president Rajnath Singh, in an interview to a Tamil daily had said the BJP was in talks with "a major party" in Tamil Nadu besides some regional ones.