It鈥檚 a sad day for聽Chicago Fire聽fans. DuShon Monique Brown, who played Chief Boden鈥檚 no-nonsense assistant Connie on the show, has died at the age of 49.

The Cook County medical examiner鈥檚 office has confirmed that Brown passed away聽on Friday shortly after noon at聽Franciscan St. James Health Olympia Fields due to what her representative, Robert Schroeder, called 鈥渘atural causes.鈥

According to TMZ, the star had聽reportedly admitted herself to a Chicago hospital days prior with chest pains, but was released shortly after tests checked out.

Law聽enforcement sources confirmed to the outletthat Brown鈥檚 family called聽paramedics聽on Friday morning聽after she began feeling unwell.聽She was then taken to the hospital, where she passed away.

鈥淭he Chicago Fire聽family is devastated to lose one of its own,鈥澛爐he show鈥檚 executive producer,聽Dick Wolf, said in a statement. 鈥淥ur thoughts and prayers are with DuShon鈥檚 family and we will all miss her.鈥

Actor Steve Piper, who appeared on the show聽 as a fireman, also paid homage to the late actress, calling her 鈥渁n amazing and talented friend.鈥

In addition to her role on聽Chicago Fire,聽which she began in 2012, Brown was a theater actress who also did voice-over work,聽counseled students at the聽Kenwood Academy High School, and appeared on a slew of other popular TV shows, including聽Prison Break,聽Boss, Empire聽and聽Shameless.

RIP,聽DuShon Monique Brown 鈥 you will be greatly missed.

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(Photos via Elizabeth Morris + Timothy Hiatt/Getty)聽