As Indian Prime Minister Narendra Modi arrived in Sri Lanka, the Sirisena-Wickremasinghe administration turned down a request by China to dock one of its submarines in Colombo. 

China had sought Sri Lanka's permission to dock one of its submarines in Colombo early next week. 

Although Sri Lanka's 'official' reason for the rejection is still unknown, the decision can be attributed to the Indian Prime Minister's visit to Colombo. 

Meanwhile, President Maithripala Sirisena hosted a dinner for Modi at the former's official residence, last night. 

High-level diplomatic sources were silent on the matters discussed by the two leaders. However, it is clear that key geo-political matters involving Sri Lanka, India and China were discussed during the interaction. 

Upon his arrival in Sri Lanka, the Indian Prime Minister was greeted by his Sri Lankan counterpart Ranil Wickremesighe, Foreign Minister Mangala Samaraweera and International Trade Minister Malik Samarawickrema.