New Delhi, Oct. 30 -- Israel's Prime Minister Benjamin Netanyahu has challenged the outcome of the country's latest parliamentary election, with his Likud party alleging widespread voter fraud by Arab political groups after the final results left both the governing coalition and the main opposition short of a majority.

The allegations have prompted scrutiny from Israel's electoral authorities and its domestic intelligence agency, the Shin Bet. However, election officials and police have rejected claims of systematic fraud, saying there is no evidence that the integrity of the vote was compromised.

The final count, released early Friday by Israel's Central Elections Committee, confirmed that Netanyahu's right-wing alliance secured 53 sea...