, international observers noted issues in several human rights areas. Excessive force was seen to be used by police forces, security forces were able to act with impunity, mob violence was occasionally seen, and prison conditions continued to be harsh and sometimes life-threatening. However, the government was seen to make some effort to prosecute security forces who used excessive force. Other legal issues included limits on free speech and freedom of the press, lengthy pretrial detentions, and arbitrary arrests and detentions. Societal issues found included violence against women, human trafficking, and child labour. Corruption within the government is seen as a major issue, despite the Malawi Anti-Corruption Bureau's (ACB) attempts to reduce it. The ACB appears to be successful at finding and prosecuting low level corruption, but higher level officials appear to be able to act with impunity. Corruption within security forces is also an issue. Malawi had one of the highest rates of child marriage in the world. In 2015 Malawi raised the legal age for marriage from 15 to 18. Other issues that have been raised are lack of adequate legal protection of women from sexual abuse and harassment, very high maternal mortality rate, and abuse related to accusations of witchcraft.