Left-wing party head congratulated Isaac Herzog but warned him of a coalition with Netanyahu.
US Secret Service confirms envelope contained cyanide and is further investigating the incident.
With 99.5% ballots counted, Netanyahu's Likud Party wins 29 seats pushing Zionist Union to second place.
Benjamin Netanyahu has claimed victory in Tuesday's election in Israel as exit polls showed his Likud party tied neck and neck with the opposition.
Israeli Prime Minister Benjamin Netanyahu has declared victory after a tight national election.
IBTimes UK looks at how women have been affected by austerity cuts ahead of Osborne's budget speech.
Foreigners have been used to train Nigerian army according to government.
Tairod Nathan Webster Pugh tried to enter Turkey in order to cross the border to Syria but was denied entry.
Iran-backed Shi'ite militias have been trying to take control of the city from Isis militants.
The judges also ruled that the 61-year-old businessman must hand £130,000 of his damages back.
The three teenagers, who have not been named, were arrested in London after being deported from Turkey.
BREAKING: Iran says 90% of nuclear technical issues solved with US.
The United States and European Union have said they will keep up sanctions if occupation continues.
Kurds may have beaten Isis in Kobani - but Kurdophobia remains rife.
The former TV presenter won her hotly contested Merseyside seat in 2010 with a 2,436 majority.
IBTimes UK looks at the possible outcomes of the vote as Netanyahu and Herzog are head to head in the polls.
Charity says punishing civilians because Raqqa is under Islamic State control cannot be justified.
The Prime Minister has offered a vote in 2017 but Ukip want one in 2015 as part of a coalition.
David Cameron said that the minimum wage will rise by 20p to £6.70 an hour in October.
Former police officer tells BBC Newsnight the Met stopped investigation after MP was arrested in 1980s.
The prime minister, who has been MP for Witney since 2001, says he loves serving his constituents.
Other countries looking to join Asian Infrastructure Investment Bank include Australia, South Korea, Switzerland and Luxembourg.
BREAKING: Foreigners include nationals from the Philippines, India, and Ukraine.
Incumbent PM Benjamin Netanyahu's Likud Party and Zionist Union led by Yitzhak Herzog locked in close contest.
Greek finance minister Yanis Varoufakis denied ever giving the middle finger.
'Declarations from outside do not concern us,' said Assad, calling on US to stop funding 'terrorist' opposition groups.
People of Ukraine hope today's images of Vladimir Putin are old or doctored - we can't bear the thought that he is back.
The Labour leader confirmed there would be no SNP ministers in a government he leads.
The SNP leader issued the warning after a report claimed Labour would rule out a coalition.
America's bid to rescue its reputation for incoherent foreign policy is too little too late.