TABUK — The father of 26-year-old Nayer Musallam Hammad Al-Nijeidi Al Bluwi has disowned his son. "I feel great sorrow and sadness over the heinous crime committed by my son in Madinah near the Prophet's Mosque. I hereby state that this criminal does not represent me nor does he represent our tribe. "We all stand by the government and put our hands in its hands against all terrorist acts. My son Fahad has also disowned his brother," the father said in a statement to Okaz. Nayer was working for the Border Guard three years ago and was dismissed from his post, his father said. He lived in Tabuk for some time and used to visit the family home every now and then. He stayed in his family house during Shaban and Ramadan months and disappeared on 25th of Ramadan without saying anything. He called later on the night of his disappearance and told his father that he was traveling to Makkah and did not give any more information. The terrorist attack carried out by Nayer, who had a history of drug abuse, killed four security men in the vicinity of the Prophet's Mosque. Private Abdulrahman Al-Juhani, one of the security officers who died in the attack, was the sole breadwinner of a family of nine members. One day before the attack, he asked his family members to gather at home where he gave his mother a gold bracelet as a gift. He was active in giving charity and helping the poor. He also bought a car for his mother before his death. He did everything he could to please his mother and make her happy.