The Situation Calls Cops on Brother for Showing Up at His House Unannounced

Mike 'The Situation' Sorrentino had some family drama boil over this week that almost landed someone in handcuffs ... none other than his own sibling.

The "Jersey Shore" star's rep tells TMZ ... Mike had called police on Tuesday evening after his brother, Maximo, showed up to his New Jersey home with a ton of gift bags he was apparently trying to drop off for MS and his newborn son/Maximo's nephew, Romeo.

We're told Maximo excessively rang multiple doorbells, peered inside through the glass, lingered a bit and then turned to leave -- but not before leaving all the presents hanging on the doorknob.

The rep says Mike was watching this from inside -- and instantly called cops, who we're told showed up in less than a minute. They ran into Maximo on his way out and told him he wasn't allowed there unless Mike specifically invited him ... and then let him leave.

We know what you're thinking -- WTF??? Well, Mike and Max have had problems for some time now, and it's become a bit of a legal situation ... according to the rep.

We're told Mike's previously filed harassment claims against Maximo -- most recently in July -- because he feels his brother's been behaving erratically, and he wants a heads up before Maximo comes to the house.

Due to their rocky history, we're told Mike's main priority these days is protecting his wife and kid, and even though they're family ... he thinks what Maximo did crossed a line. That's why he reported it to cops, but he didn't want Max arrested.

As for Maximo's side -- he says he was just dropping off Puma BMW tracksuits for Mike and Romeo. Maximo also says he's saddened by Mike calling the 5-0 on him -- because he'd never do that -- and denies there's any ongoing issues between them ... despite what Mike says. 🤷🏽‍♂️