Rapper Wiz Khalifa took a few moments during a South American trip to visit the grave of murderous drug lord Pablo Escobar. He posted photos of the tombstone with flowers and what appears to be a joint on Instagram — and a picture of himself smoking at the graveside.

Colombians were not impressed.

Medellin Mayor Federico Gutiérrez lashed the 29-year-old Pittsburgh rapper — who performed a concert in Medellin last week — as a “scoundrel” and demanded an apology, the BBC reported. “It shows that this guy has never had to suffer from the violence inflicted by these drug traffickers,” said Gutiérrez, who added that Khalifa should have left flowers for Escobar’s victims. The mayor said Khalifa won’t be welcome back in town unless he apologizes, the Pittsbugh Post-Gazette reported.

Khalifa also posed for an Instagram shot in front of Escobar’s former home.

Twitter and Colombian newspapers joined Gutiérrez in piling on the rapper for his drug-lord pilgrimage.

A post shared by Wiz Khalifa (@wizkhalifa) on Mar 25, 2017 at 8:38am PDT

A post shared by Wiz Khalifa (@wizkhalifa) on Mar 25, 2017 at 8:38am PDT

Escobar and his Medellin cartel are believed responsible for as many as 4,000 deaths before Escobar was killed in 1993.

Bogota newspaper El Espectador blasted Khalifa’s “gaffe” and said it “reopened the profound pain that narco-trafficking has left that city.” The newspaper’s editor was gunned down in 1986 in an assassination linked to the cartels, and El Espectador’s office was bombed in 1989 by the Medellin cartel, the Pittsburgh Post-Gazette noted.

This is not cool. @wizkhalifa Pablo Escobar is a murderer dude, did you not get the memo on that? https://t.co/DrXwwXnrPc — The Nico Life (@The_Nico_Life) March 27, 2017

It's embarrassing that @wizkhalifa honors Pablo Escobar. What a lack of respect with the people of Colombia: https://t.co/RPWgptTIHp — José Miguel Quintero (@JosMiguelQuinte) March 27, 2017

.@wizkhalifa Colombians aren't proud as you are of a murder and narco like Pablo Escobar. Show more respect. Colombia isn't Pablo Escobar... pic.twitter.com/wTWihq0mC4 — Pablo JaramilloVasco (@PabloJlloVasco) March 27, 2017

Wiz Khalifa is a fool for going to Pablo Escobar's grave and leaving flowers. Don't blame the government for wanting to make him apologise — paolo (@lewzealandlover) March 27, 2017

Khalifa hasn’t yet responded to the outpouring of anger.