Mike Epps‘ 18-year-old daughter claims the comedian has been threatening her ... promising to “f**k her up”, and now, she’s turning to the police for help, but Epps’ camp tells TMZ she’s lying. 

Bria Epps filed a police report with the Indianapolis Metropolitan Police Department yesterday — claiming the threats started after a recent argument between her and her dad.

Bria tells TMZ, the argument started when Mike appeared on an episode of “The Wendy Williams Show” earlier this month and gave a shout out to two of his kids — but that didn’t sit well with his other offspring … who were pissed at the snub.

Bria — whom Mike fathered before he married his current wife — tells us, she called Mike to express her feelings, and when things got heated … she threatened to “air some family drama” to the media.

According to the police report, Mike flipped at the threat — claiming he’d “f**k her up” and “cause her and her mom and grandmother problems.” So, Bria filed the report.

But sources close to Mike tell us, the tension started before the WW show — because Bria asked for Mike to give her lump sums of cash to pay for her college tuition. We’re told Mike refused, insisting on paying the school directly … and that’s when Bria snapped and made the threat.

According to sources close to Mike, the Wendy Williams fight was secondary.