(CNN) -- Massachusetts Lt. Governor Timothy Murray checked into a Worcester, Massachusetts, hospital Monday for observation after complaining about "feeling under the weather," his office said.
"After marching in five parades in 90 degree heat over the last three days the Lt. Governor was feeling under the weather and decided to seek medical attention this evening," said spokesman Kyle Sullivan Monday night. "He went to Saint Vincent Hospital in Worcester where he will spend the night for observation."
Sullivan said Murray, 42, is in "good spirits."
The Northeast is in the grips of a historic heatwave. The National Weather Service has issued heat advisories across the region.