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SPRINGFIELD, IL - Authorities say activities can resume at the Illinois Capitol after crews investigated a report of hazardous material that delayed a critical budget override vote.

An announcement over the loudspeakers in the Illinois House gave legislators and reporters gathered on Thursday afternoon the "all clear."

The Capitol was on lockdown as fire officials investigated a report of someone throwing a powdery substance in Gov. Bruce Rauner's Capitol office. Rauner isn't at the Capitol.

Dave Druker, a spokesman for the secretary of state's office, which oversees Capitol security, says no hazardous material was found and the investigation is ongoing.

No injuries were reported but no one was allowed to enter or exit the building for about two hours. The secretary of state's office has said one person is in custody.

The House is scheduled to take up an override vote of a budget package that could end Illinois' budget impasse, which has entered a third straight year.

The Illinois Secretary of State Police says a woman spread a suspicious substance near Rauner's office. She was later detained in the House chamber.

Governor Rauner is not at the Capitol. He is on his way back from the funeral of Trooper Ryan Albin, who died last week.

The Illinois House is planning on voting on overriding Gov. Bruce Rauner's vetoes of budget legislation Thursday. The vote should end the nation's longest state fiscal crisis since at least the Great Depression. The Democratic-controlled House scheduled override votes for Thursday afternoon. Successful overrides would put the budget into law.

Rauner, a Republican, implored the General Assembly on Wednesday to sustain his vetoes of a $36 billion spending plan financed with a $5 billion income tax increase. Rauner says the 32 percent income tax increase "a 2-by-4 smacked across the foreheads of the people of Illinois."

He decried the lack of spending cuts and money-saving reforms he's demanded since 2015. Credit-rating agencies are watching closely and have threatened to label Illinois debt "junk" without swift resolution.

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Hazmat crew checking the building pic.twitter.com/ogO6ZsFsvN — Tahman Bradley (@tahmanbradley) July 6, 2017

.@FOX2now The Illinois Capitol is currently on lockdown, delaying the House's override vote on a budget plan. I was told not to leave. pic.twitter.com/BqF8MvkPR0 — Nick Thompson (@nickthompsonMO) July 6, 2017

"A total lockdown is now in effect for the Capitol building. No one should enter or exit the building. Please shelter yourself," alert said. — Tina Sfondeles (@TinaSfon) July 6, 2017

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