New Delhi, Aug 16 (IANS): In developments that could abate Delhi's power war, Prime Minister Narendra Modi on Sunday greeted Chief Minister Arvind Kejriwal on his birthday to wish him "long life and good health" while Lt. Governor Najeeb Jung sent him a birthday cake and flowers.

Besides several supporters and residents who poured into Kejriwal's Civil Lines residence, BJP stalwart L.K. Advani, Bihar Chief Minister Nitish Kumar and West Bengal Chief Minister Mamata Banerjee greeted the Aam Aadmi Party (AAP) leader over telephone.

Jung, with whom Kejriwal has been having a running feud, surprised the AAP founder leader by sending a cake and flowers.

Ahead of his departure to the United Arab Emirates on Sunday, Modi said he had telephoned Kejriwal and wished him on his 47th birthday.

"Spoke to Delhi CM Arvind Kejriwal and wished him on his birthday. My prayers for his long life and good health," Modi said in a brief tweet.

Kejriwal, who lost to Modi in Varanasi in the Lok Sabha election, thanked the prime minister for his wishes, saying he was "touched".

"Thank you so much Sir for your wishes. I am touched. I look forward to meeting you soon to brief you on Delhi's situation," said Kejriwal who led his party to a sweeping win in February.

An AAP source told IANS that Modi also sent a birthday card.

This is the first known direct communication between Modi and Kejriwal since the latter called on the prime minister after the AAP routed the BJP in the February assembly election.

The result left the Bharatiya Janata Party with just three of the 70 seats in the Delhi assembly. The AAP won 67 seats.

Modi's gesture came a day after Kejriwal said in his Independence Day address here that there must be a "working arrangement" between the prime minister and the Delhi chief minister.

While admitting that the AAP government had known differences with the Modi government, Kejriwal said: "As both the chief minister of Delhi and the prime minister of the country live in the national capital, there should be a working arrangement between them for the welfare of the city and (its) people."

Kejriwal also said in the speech that he had tried to meet Modi to discuss Delhi's problems but he could not get an appointment. He promised to try and meet Modi again.

The Delhi government has been locked in a conflict with Delhi's Lt. Governor Najeeb Jung - an appointee of the central government - over the city government's powers.

Kejriwal has in recent times publicly blamed Modi for Jung's involvement in subjects which the Delhi government says lie outside the Lt. Governor's domain. Kejriwal has been particularly harsh on Jung.

Nevertheless, Kejriwal and Jung met and embraced one another at an Iftaar party on July 13. But very soon, they publicly clashed again.

Modi's surprise tweet to Kejriwal and his reply were re-tweeted by several AAP leaders.

In recent times, Kejriwal, feeling cornered by Jung and the Modi-led government, has been opening up to opposition leaders, particularly Nitish Kumar and Mamata Banerjee.

Kejriwal also surprised many by calling on Advani at his residence. He has also been regularly meeting Home Minister Rajnath Singh.

He has met Nitish Kumar at least four times and met Banerjee for the first time here last week.

Kejriwal has also announced his decision to host a meeting of chief ministers to discuss issues related to federalism. And though the AAP has not declared its support to anyone in Bihar, where assembly elections are due, his sympathies are known to be with Nitish Kumar.