Islamabad

In a major upset to the ruling coalition led by Prime Minister Shehbaz Sharif, Imran Khan-led Pakistan Tehreek-e-Insaf (PTI) won six National Assembly and two Punjab Assembly seats in by-elections held last week.

PTI was contesting from seven constituencies - won the by-elections in six of eight National Assembly seats up for grabs across Pakistan.

The PTI chief won the seats in Peshawar, Mardan, Charsadda, Faisalabad, and Nankana Sahib after beating the ruling coalition candidates.

The main opposition party also won two of three Punjab Assembly seats in the by-elections, further strengthening its position in the country's biggest province - where it rules in coalition with Pakistan Muslim League Quaid (PML-Q).

The by-polls were the latest twist in political wrangling that began after Khan's April 10 ouster via a parliamentary no-confidence vote - making him the first prime minister to be voted out of office.

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The by-elections come as the nation grapples with the aftermath of devastating monsoon floods that affected more than 30 million people and left a third of the country under water.