Siddaramaiah meets Manmohan Singh
The Prime Minister had earlier congratulated Siddaramaiah on his election as Chief Minister of Karnataka and wished him "well for the future."
"It was just a courtesy call," the Chief Minister told reporters after meeting the PM.
During his stay in the capital, Siddaramaiah is expected to hold consultations with central leadership on the composition of his Cabinet.
Shortly after his arrival here, he had made it clear that people with clean image will find place in his Cabinet to be formed in a couple of days.
He was chosen the Congress Legislature Party leader on Saturday after he upstaged party warhorse Union Minister Mallikarjun Kharge for the coveted post.
Siddaramaiah and KPCC chief G Parameshwara had led the Congress battle against BJP in the May five assembly polls, which paid rich dividends as the party riding on anti- incumbency put up an impressive show winning 121 seats, eight more than the required strength in the 224-member House.