Jamie-Lynn Sigler’s older brother, Adam Sigler, has passed away aged 41.
The brother of the Sopranos star died on 12 November after suffering a brain hemorrhage.
It was reported by US Weekly on Wednesday that Adam had been in a coma, surrounded by his loved ones, when he passed away.
Earlier in the week the 33-year-old American actress changed her Facebook profile picture to one with her oldest sibling.
"This came out of nowhere. It's a shock," a source said on Thursday.
Adam was eight years older than the actress and lived in New York, where he and his siblings grew up.
The 41-year-old stockbroker was reportedly engaged to girlfriend Danielle Piro and was an uncle to Jamie-Lynn’s son, Beau Kyle, aged one.
Jamie-Lynn suffered another loss in 2013 when her on-screen father James Gandolfini passed away at the age of 51.