The guardian and four other suspects were arrested after 20 people were killed in a Muslim Shrine, officials said on Sunday in Pakistan. 3 people hospitalized in critical condition after the attack in Punjab province, said Liaqat Chatta Deputy Commissioner of police in the city of Sargodha, where the attack occurred. Wahid was arrested along with four other suspects. A police official described Wahid as mentally unstable. According to him, the investigation is conducted. Shrines are scattered all over Pakistan, where they are considered places of meditation and shelters where the homeless find shelter and alms. The guardians of the temple, as a rule, perform the caretaker duties - cleaning of the territory and the organization of events and rituals. Sargodha is located about 105 miles North-West of Lahore. The chief Minister of Punjab province Shahbaz Sharif has ordered investigation into the killings and announced that the families of the victims will be compensated, said assistant Salman Sufi. Keepers of many shrines cultivated relationships with local politicians to increase their influence and, in exchange for votes, to get protection, he said. "There were cases when unknown was given the status of Holiness, and burial was declared sacred objects only to collect donations," - said the Sufi. "And large sums of money are collected and used for food, clothing, marches, and when we are talking about illegal custodian, on drugs, women and alcohol." He called for regulation to control the guardians of the temple in the country. In February, at least 75 people were killed in a suicide attack in Pakistan Shrine of Lal Shahbaz qalandar. Parishioners gathered there for the Sufi ritual Dhamala, which includes music, singing and prayer. Sufism is a mystical Islamic movement, which exists since the XIII century. Followers of Sufism have taken various ritual practices such as the reading of hymns and poetry, with the aim of achieving a direct encounter with God.