Pakistan's prime minister arrived in New Delhi Monday to attend the inauguration of his Indian counterpart Narendra Modi, a historic moment that could signal a thaw in relations between the often neighbors, AP reported. Modi's inauguration is the first to which India invited heads of state from across South Asia. The leaders of Sri Lanka, Mauritius, Maldives, Nepal and Afghanistan were expected to attend, and Bangladesh was to be represented by the speaker of its parliament. India's President Pranab Mukherjee will administer the oath of office and secrecy to Modi and his Cabinet ministers at an inaugural event to be held at the presidential palace.