Nigel Dodds, the Democratic Unionist Party Parliament member, charged the Labour Party with "hypocrisy of the highest order", claiming that it discussed with the DUP possible deals in 2010 and 2015, reported The Guardian.
The Scotsman also leads with the story of the prime minister's deal with the DUP, pointing out that the pact to keep her in Downing Street cost her £100m per MP who pledged to vote with the government.
Under a "supply and confidence" arrangement meant to last for the full Parliament, the DUP guarantees that its 10 MPs will vote with the Government on the Queen's Speech, the Budget, and legislation relating to Brexit and national security.
Opposition Labour Party leader Jeremy Corbyn said the agreement suits May's wish to stay in power but does little for the country.
The DUP said the deal would apply for the lifetime of the Parliament, scheduled to last five years, but would also be reviewed at the end of the current session in two years time.
THE DUP has backed a deal to support the minority Conservative government.
McDonnell said "we need to see an end to austerity throughout the United Kingdom not just in Northern Ireland, and not just to prop up Theresa May and her failed government".
"Does the secretary of state agree with [former government peace negotiator] Jonathan Powell that is it now impossible for the United Kingdom government to be even-handed in Northern Ireland?"
"It sees us now in a situation where thanks to the pretty calamitous decisions of two Conservative prime ministers, we're in one hell of a mess", he told reporters.
Sinn Féin President Gerry Adams said the deal with the DUP provided a "blank cheque for Tory Brexit which threatens the peace agreement".
Today is the deadline for Northern Ireland's two main parties-nationalist Sinn Fein and the pro-union DUP-to come to a power-sharing agreement.
DUP, a conservative Northern Irish party, will give them an effective majority of 13 in key votes. In early 2014, asked the Northern Ireland Police to investigate the legality of anti-Israel demonstrations, and on June 11, 2014, the party established a special Friends of Israel Association.
But the extra funding provided to Northern Ireland has been criticised by politicians in Scotland, Wales and parts of England who have demanded more money for their regions.