New Jersey Lt Gov Sheila Oliver has died one day after being hospitalised for treatment for an undisclosed medical issue while serving as acting governor. Ms Oliver was taken to Cooperman Barnabas Medical Center in Livingston on Monday, while Governor Phil Murphy was in Italy on a family vacation. Her family confirmed her death at the age of 71 in a statement on Tuesday. “It is with incredible sadness and a heavy heart that we announce the passing of the Honorable Sheila Y. Oliver, Lieutenant Governor of the State of New Jersey,” the family said in a statement to ABC7. “She was not only a distinguished public servant but also our cherished daughter, sister, aunt, friend, and hero.” No cause of death has been released. In a statement, Gov Murphy said he and his family were “incredibly saddened to learn of the passing of our dear friend, colleague, and partner in government.” Ms Oliver, a Democrat, was selected as Gov Murphy’s running mate in 2017, and was a “trailblazer in every sense of the word”, he said. In 2010, she became the first Black woman to serve as Speaker of the General Assembly, and was the second Black woman in US history to lead a house of a state legislature. “I knew then that her decades of public service made her the ideal partner for me to lead the State of New Jersey. It was the best decision I ever made.” Democratic Senate President Nicholas Scutari is serving as acting governor, the governor’s spokesperson Mahen Gunaratna said. The governor will be returning to the US “soon”, Mr Gunaratna added. Along with serving as Gov Murphy’s top lieutenant, Ms Oliver also oversaw the Department of Community Affairs, which coordinates state aid to towns and cities and supervises code enforcement. She had been twice elected to the lieutenant governor’s role in 2017 and 2021, becoming the second person to hold the post in New Jersey. Born and raised in Newark, Ms Oliver earned a degree in sociology from Pennsylvania’s Lincoln University before being elected to the Essex County board of chosen freeholders in 1996. Ms Oliver had served on the New Jersey assembly since 2004. “She brought a unique and invaluable perspective to our public policy discourse and served as an inspiration to millions of women and girls everywhere, especially young women of colour,” Gov Murphy said in a statement. “Beyond all of that, she was an incredibly genuine and kind person whose friendship and partnership will be irreplaceable.” Ms Oliver’s family requested privacy, and said details of a memorial service would be provided at a later date. Read More New Jersey sues federal highway officials in bid to stop New York City's plan to charge big tolls Manhattan architect, family man and accused serial killer: Who is Gilgo Beach suspect Rex Heuermann? Chris Christie slams Trumps as ‘Corleones with no experience’ New Jersey Lt. Gov. Sheila Oliver, first Black woman to serve as state Assembly speaker, dies at 71 The first generation of solar panels will wear out. A recycling industry is taking shape Blue blood from horseshoe crabs is valuable for medicine, but a declining bird needs them for food