Lil Tjay couldn't avoid getting arrested this time -- 4 days after NYPD searched him and found nothing, cops pulled him over again ... and now he's facing some serious charges.
Law enforcement sources tell TMZ ... the rapper was busted Wednesday afternoon in Brooklyn and booked for criminal possession of a weapon, marijuana possession and grand larceny.
We're told Lil Tjay was in a vehicle with 4 others when cops pulled them over for switching lanes without signaling. Our sources say the officer smelled weed in the car, which resulted in a search and the discovery of 4 loaded handguns and a large amount of marijuana.
We're told neither the rapper nor anyone in the vehicle took ownership of the firearms or the weed, so they were all hit with possession charges. It's unclear why they're also facing the grand larceny charge.
In an odd coincidence ... this arrest comes after Lil Tjay's encounter with NYPD last weekend, when the 19-year-old's music video shoot was swarmed by cops. NYPD told us they were responding to a call about people waving guns, and though his vehicle was searched ... cops found nothing, and he was released.