Prime Minister Narendra Modi will leave for Tokyo later on Monday to attend the state funeral of former Japanese prime minister Shinzo Abe.

The funeral will take place on Tuesday and is expected to be attended by representatives from around hundred countries.

"I will be conveying heartfelt condolences to Prime Minister Kishida and Mrs. Abe on behalf of all Indians. We will continue working to further strengthen India-Japan relations as envisioned by Abe San," Modi said in a tweet.

Foreign Secretary Vinay Kwatra said the duration of Modi's visit from the time of his departure from Delhi will be around 12 to 16 hours.

Kwatra said Modi will have a bilateral meeting with Japanese Prime Minister Fumio Kishida and also meet Abe's wife.

Abe was shot dead while making a campaign speech three months back.

Modi's visit to Japan will be an opportunity to honour former prime minister Abe, Kwatra said.