Police in Colombia and Mexico have seized more than two tons of cocaine after a sniffer dog found part of the consignment dyed black and registered as an ingredient in print cartridges, Colombian police said. The shipment, part of which was found in the cargo terminal of Bogota's international airport, was destined for the Mexican state of Sinaloa, home to a prolific drug cartel, Colombia's anti-narcotics unit said in a statement. "Forty-eight boxes contained a black powder, registered as a chemical component used to load printer cartridges and photocopier toner," the statement said. Lab tests later confirmed the haul in Bogota contained 1.07 tons of cocaine. The Colombian police then alerted Mexican authorities to a similar air shipment which had left Bogota hours before, the statement added. Police at Mexico City's international airport found 961 kilograms of the dyed cocaine in the plane. The drug was likely sent by a narcotics ring on Colombia's Atlantic coast, the police said. Colombian authorities have seized 115 tons of cocaine in 2015. Some 300 tons are produced per year in the Andean country, long a hub for drug production and trafficking.