Erin Moran
Erin Moran’s death was likely due to cancer. Pictured: Actress attends the Academy Of Television Arts & Sciences’ “Father’s Day Salute To TV Dads” in North Hollywood on June 18, 2009. Getty Images/Frazer Harrison

Erin Moran’s brother, Tony, slammed former “Happy Days” star Scott Baio. The actor erroneously claimed Moran died from a heroin overdose, when, in fact, she likely died from cancer since she was diagnosed with Stage 4 throat cancer. An official autopsy report is still pending.

“#scottbaio. Your wife contacts me? Not u? You f---ing scumbag coward piece of s---!” Tony Moran tweeted Tuesday.

READ: Scott Baio Claimed Erin Moran Died Of Heroin Overdose Before He Knew Cause Of Death

Tony Moran continued his rant on Facebook:

“Well guys. Guess what? I was contacted by Scott Baio's wife. His wife! F---ing coward! I've never met her. I do know the scumbag piece of s--- Scott Baio though. He was a piece of s--- back then and still is. He had his wife contact me! Very apologetic and shit. Doesn't surprise me. It's too late you mother---ing pieces of s---! Go back under the rock you crawled out from under. There isn't one word I want to hear you speak. Makes me sick to my stomach.”

Moran’s brother took a verbal shot at Baio below the belt — literally.

“A special shout out to Scott Baio. I already went on Twitter about you. I hope it finds you. You and my lil sis had a very, very brief fling. She dumped you. 2 reasons. 1. She told me that you were more like a lil girl and not a man. 2. She told me that you were tiny. Ya know. Barely a man in the man region. True story! Scott, I'd advise you to get on your knees and pray you never run into me.”

Baio didn’t respond to Tony Moran’s insults. Instead, he clarified his comments about Moran mistakenly dying from a heroin overdose. “Please stop assuming the worse in me. I'm a compassionate person. I'm very heartbroken over her passing, especially since it was cancer,” the actor penned on Facebook Monday. “I don't see people going after or attacking every network that said it was a drug overdose. I've openly stated my truths. I'm done.”

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