Bombings in Sweden are attacks and sabotage using explosive devices by criminals in Sweden. The weapons used are weapons such as hand grenades and explosives intended for either civilian or military use. Legal authorities use the term allmänfarlig ödeläggelse genom sprängning (English: damage by explosive blast) and media in Sweden use the shorter term sprängdåd. This crime was not categorized separately prior to 2017. In 2018 there were 162 explosions, and in the first nine months of 2019 97 explosions were registered, usually carried out by criminal gangs. According to Swedish police commissioner Anders Thornberg in 2019, there is no international equivalent to Sweden's wave of bombings. Usage of hand grenades reached a significant peak in 2016. According to police in Gothenburg and Malmö in 2016, the use of hand grenades by criminals in Sweden is a phenomenon which is unusual for all comparable countries both inside and outside the EU. According to criminologists Manne Gerell and Amir Rostami, the only other country that keeps track of hand grenade explosions is Mexico. While Mexico has a murder rate 20 times that of Sweden, on the specific category of grenade explosions per capita the two countries were comparable at the time. According to police authorities, many of the hand grenades used are weapons which originate from the Yugoslav Wars, and the hand grenades found by the police are exclusively the ex-Yugoslavian M75 hand grenade. Explosions have occurred in both rich and low-income areas. Swedish police do not record or release the ethnicity of convicted criminals, but Linda H Straaf head of intelligence at National Operations Department says they are from poor areas and many are second- or third-generation immigrants. Swedish media sometimes are accused of not covering the topic enough, but a 2019 study by polling company Kantar Sifo found that law and order was still the most covered news topic on Swedish TV and radio and on social media. In 2019, Denmark, worried about the bombings in Sweden, introduced passport controls on its border checkpoints with Sweden for the first time since the 1950s. In September 2019, police in Malmö issued a general warning to be vigilant for explosive devices when walking the city at night. Perpetrators According to police the attackers are part of the same gangs which also increasingly engaged in gun crime leading to a wave in shootings. While there were 17 deadly shootings in 2011, there