Cincinnati Bengals offensive analyst Adam Zimmer -- the son of longtime Vikings head coach Mike Zimmer -- passed away unexpectedly on Monday, according to his sister.
He was only 38.
Corri Zimmer White announced the news in a heartbreaking Instagram post ... calling her brother the "kindest, sweetest, family loving, sports obsessed soul there ever was."
"My heart is shattered and it hurts so bad," said Corri, who shared several photos of her brother in her announcement. "I'm so lost, I'm so overwhelmed, I'm so heartbroken.