An attempted suicide attack on a public hospital in Borno state was foiled on Saturday, Modu Grema, a member of the youth vigilante group in Maiduguri told our correspondent on phone.
He said two female suicide bombers disguised as visitors to patients in the ward of the General Hospital, Molai, about 4pm.
According to him: "What could have been a major disaster was forestalled by two security men at the gate to the hospital who stopped the women and told them they needed to be searched before they could be allowed entrance."
Grema said it was while searching the women that the bomb on them detonated with a loud bang killing them and the two security men, including another person nearby.
He equally said the explosion caused injuring on several other persons who had to be rushed to the General Hospital in Maiduguri, a distance of about 20 kilometres, for treatment.
A source at the General Hospital, Maiduguri,  a nurse who does not want his name mentioned, told our correspondent on phone that 12 persons that were injured in the explosion were brought to the accident and emergency ward of the hospital for treatment.
In another incident, the attempt by another set of two female suicide bombers became futile in another part of the state.
A member of youth vigilante group, Idris Abba told our correspondent that the two female suicide bombers were waiting to join a vehicle to Maiduguri when the explosive device strapped on one of them accidentally detonated by the roadside at Jakana, a distance of 32 kilometres to the capital of the state.
The explosion immediate drew the attention of the military at a nearby checkpoint to the area. They subsequently combed the area and saw the second suicide bomber who was trying to flee.