Throughout the 2000s, Nairobi had struggled with rising crime, earning a reputation for being a dangerous city and the nickname "Nairobbery," a name which persists today. On 7 August 1998, the US Embassy was bombed, killing 224 people and injuring 4000. In 2001, the United Nations International Civil Service Commission rated Nairobi as among the most insecure cities in the world, classifying the city as "status C". In the United Nations report; it was stated that in 2001, nearly one third of all Nairobi residents experienced some form of robbery in the city. The head of one development agency cited the notoriously high levels of violent armed robberies, burglaries, and carjackings. Crime had risen in Nairobi as a result of unplanned urbanisation, with a minimal number of police stations and a proper security infrastructure. However, many claim that the biggest factor for the city's alarming crime rate is police corruption, which leaves many criminals unpunished. As a security precaution, most large houses have a watch guard, burglar grills, and dogs to patrol their grounds during the night. Most crimes, however, occur around the poor neighbourhoods where it gets dangerous during night hours.