Premier Wickremasinghe, who arrived on Wednesday on a three-day visit, met PM Modi yesterday.
Officials familiar with the meeting said all projects underway had been discussed.
This would include a recent decision to award a housing project in Jaffna to India after taking it away from a Chinese group.
India is also involved in building airports in Palaly and a port in Kankesanthurai as well as one of the container terminals in Colombo and a lease of Mattala airport near the Chinese-controlled Hambantota port.
Prime Minister Modi tweeted that he and Ranil Wickremasinghe had fruitful discussions, reviewing various aspects of India-Sri Lanka cooperation.
Meanwhile, Prime Minister’s Office stated that the Indian Prime Minister had been unhappy over the delay in Indian assisted projects in the island.
The communiqué also said that the Indian Prime Minister had requested to sort out any doubts regarding India or himself.