Update: Matt Hardy & Reby Sky Fight – Arrested

We broke the story … both Reby and her ex-WWE superstar husband were arrested on Jan. 1 for assault and battery after attacking each other inside their hotel room .

Now, sources tell us … the whole fight started when Reby asked a seemingly intoxicated Matt if he had been drinking or using other substances that night.

FYI — Matt has had substance abuse issues in the past … and once completed a WWE-sponsored rehab program.

We’re told Matt didn’t take kindly to Reby’s accusation and the situation escalated into a full blown fight.

After the incident, the two talked out their issues and decided they wanted to try to make their relationship work. They’ve made several public appearances together since the arrest … and we’re told they’re both committed to their marriage .

Just look at the mug shots of Hardy and 27-year-old Reby Sky — both appear bloody and scratched up.

Hardy has multiple scratch marks all over his face and Sky — real name Rebecca Hardy — appears to be sporting a fat lip, black eye and several small cuts on her face.

Law enforcement tells TMZ Sports … cops raced to the Hampton Inn in Emporia, VA on January 1st around 5:45 AM after someone at the hotel call 911.

During the 911 call, obtained by TMZ Sports, the hotel staffer told the operator … “A guest just came down here and said somebody’s beating the hell out of his wife a girl or something.”

When cops arrived to the scene, both Matt and Sky were arrested for assault and battery. They were released on $3,500 bail.