since 1999. In 1996, a group of researchers from Puerto Rico's Mental Health and Anti Addiction Services Administration, published the results of a study involving 849 out-of-treatment drug users in the San Juan area. Their study found that 36.5% of the drug users in the study were crack cocaine users only, 42.4% were drug injectors only and 21.1% were both drug injectors and crack users. In April 2021, a shipment of cocaine with an estimated value of $50 million was intercepted in Yabucoa. Heroin In 2001, U.S. Customs and Border Protection in Puerto Rico seized 56 kilograms of heroin from commercial aircraft at airports and 28 kilograms of heroin from commercial maritime vessels in Puerto Rico. That same year, government officials arrested seven individuals in Puerto Rico, for swallowing between 36 and 98 condoms full of heroin, when they arrived from Aruba on a cruise ship. In June 2002, drug detecting dogs detected and CBP seized 24 kilograms of heroin in a cargo storage area on a pier in San Juan. That same year federal law enforcement officials in San Juan seized 1.4 kilograms of heroin from a passenger arriving from Aruba on a cruise ship. Addicts "shooting up" with dirty needles has created a public health emergency in Puerto Rico with an HIV positive rate that is 4 times higher than the U.S. national average. Hogares CREA is one of the few organizations offering addicts rehabilitation services. Marijuana In 2001, CBP confiscated 205 kilos of marijuana at airports throughout Puerto Rico. In 2002, a resident of San Juan was arrested at the airport, when government officials found 12.7 kilograms of marijuana hidden in his luggage. Police corruption In 2008, four police officers in Puerto Rico were arrested by the Federal Bureau of Investigation (FBI), including a Lieutenant with 33 years on the force, for extortion and distribution of cocaine and heroin. In 2007, 9 police officers and their lieutenant were arrested for planting drug evidence, including cocaine, heroin, and crack, on people living in the city's low-income housing projects, prompting Puerto Rico's attorney general's office to review previous cases, making sure no innocent people were put in prison. Between 2003 and 2007, 100 officers had been under investigation and 75 others convicted under federal court for police corruption. In 2001, one of the biggest police corruption busts in U.S. history took place in Puerto Rico, when 28 state police