The grieving dad of a #YouTuber k-lled alongside #OliverTree and four others in a mid-air helicopter crash said he believes “it was an attack.” #RicardoPrim, the dad of Argentine influencer Gaspar “Gaspi” Prim, said his son, 23, d-ed in a “very unjust way” in the June 14 tragedy in Rio de Janeiro, Brazil, local outlet Clarin reported.  “It’s not known whether it was an accident or an attack,” the dad said. “I didn’t know the American singer who was with him, Oliver Tree, but I’m receiving a lot of information and I believe it wasn’t an accident. For me, it was an attack.” •aintyoumalcom