9:41 AM PT — Sources familiar with the surveillance video tell TMZ … the video shows at least 4 masked men with hoodies making their way into the house just 10 minutes after people inside the house deadbolted the front doors shut. We’re told they did not turn the house alarm on, which made it easier for the home invaders to get inside.

And, there’s this … Pop Smoke posted the address of the home earlier in the day. He was showing off gift bags he had received and one had the home’s address. As for why he was getting gift bags … his mix tape hit #7 on the Billboard 200 chart Tuesday.

8:03 AM PT — Just hours before he was gunned down, Pop Smoke mugged with a pal in a car — the friend holding a fortune in bills — in the driveway of the home where he was shot.

7:32 AM PT — Law enforcement sources tell us there was a party or gathering at the house prior to the shooting.  It’s unclear what motive the shooters had in showing up at the house.

7:08 AM PT — Nicki Minaj just posted a message about his death … “The Bible tells us that jealousy is as cruel as the grave. Unbelievable. Rest in Peace, Pop.”

6:56 AM PT — The home is owned by ‘RHOBH’ star Teddi Mellencamp and her husband, Edwin Arroyave, who owns several homes in Los Angeles. It’s possible Pop Smoke was renting the property.

Pop Smoke, an up-and-coming rapper, was shot and killed Wednesday morning in what appears to be a home invasion robbery … TMZ has learned.

The rapper was at a home in the Hollywood Hills at around 4:30 AM when 2 men wearing hoodies and masks broke into a house … this according to law enforcement sources. We’re told the 2 men fired multiple shots, striking and critically wounding Pop Smoke. The men were seen fleeing on foot.