A British-Bangladeshi woman and her 15-year-old daughter who drowned at a beach in Essex while they tried to save a young child have been pictured for the first time. Several people had got into difficulty in the water amid high tides at Sea View Holiday Park, West Mersea beach, near Colchester, at around 5.30pm yesterday.Shelina Rahman, a teacher in her 40s, and her 15-year-old daughter Sameeha both died after rushing into the water to try and help the youngster while on a family summer holiday trip. A seven-year-old child is also fighting for their life in hospital, relatives have said. It is understood the family was enjoying a summer holiday trip out when the tragedy unfolded - as they sat near the shoreline during an incoming high tide at West Mersea Beach, a six-year-old child was swept away by the currents.Both the Mrs Rahman and Sameeha attempted to rescue the child, only to get into difficulty themselves. Mrs Rahman was wife of politician Dr Mansur Rahman, leader of Jubo Dal UK - the youth wing of the Bangladesh Nationalist Party, and daughter to Mujibur Rahman, former vice president of the UK BNP, originally from Chhatak Upazila in Sylhet, Bangladesh.One beach hut owner told how the 'horrific' scenario unfolded as the woman was 'trying to save [her] family', adding: 'Apparently she did all she could and ended up dying.'A third person has been hospitalised and is in a serious condition, while two others also remain in hospital with non-life-threatening injuries.East of England Ambulance Service said one person was airlifted to hospital while a further three were taken by road.West Mersea Coastguard Rescue Team said it had 'responded to a tragic incident' yesterday and that its thoughts were 'with the family involved'.Prime Minister Andy Burnham thanked emergency services during a visit to Harlow, Essex today, describing last night's events as 'very, very sad'. Sameeha Rahman, 15, (pictured with father Dr Mansur Rahman) died alongside her mother when she bravely tried to rescue a young child who had got into difficulty in the water It was revealed today that the victims in the incident were British-Bangladeshi mother Shelina Rahman (pictured), a teacher in her 40s, and her 15-year-old daughter The woman and girl have been named as Shelina and Sameeha Rahman, the wife and daughter of Dr Mansur Rahman, pictured, who is the leader of Jubo Dal UK, youth wing of the Bangladesh Nationalist Party Two police officers are seen on Wednesday night near to the scene where Shelina and Sameeha Rahman died An air ambulance near the scene of the tragedy in West Mersea, Essex yesterday - one person was airlifted to hospital and a further three taken by roadIn a social media tribute, a family friend said: 'With deep sorrow and a heavy heart, we inform you that the wife of the Joint Secretary of the UK Youth Wing, beloved Dr. Sheikh [Monsur Rahman], and his 15-year-old daughter [...] drowned in the sea yesterday. The deceased has been confirmed by the police.'We express our deepest condolences to the bereaved family and pray for the forgiveness of the deceased and the speedy recovery of the injured.'In a condolence message the BNP Secretary General said: 'There are no words adequate enough to express sympathy to the bereaved families in the face of such a tragic loss. 'I pray that Almighty Allah grants the departed souls Jannatul Ferdous and gives their grieving family members the strength and patience to endure this immense sorrow.'The beach hut owner told the Daily Mail: 'We heard the helicopter last night and the search and rescue operation.'We saw all the emergency services. We have a beach hut and live locally as well.'I have heard the poor woman was trying to save the family and then has died. It's horrific. It sounds like a worst nightmare. Apparently she did all she could and ended up dying.'At least six ambulances, a dozen police cars, a fire engine, a lifeboat, two air ambulances and a coastguard helicopter were sent to the scene yesterday.One coastguard truck remained on the shingle beach into the night near an area which was cordoned off with a wind break. Other emergency vehicles were parked behind a row of multi-coloured pastel beach huts beside the West Mersea Holiday Park. The area is known for its strong currents that can take swimmers and tourists by surprise. Emergency services at the scene after the incident in West Mersea last night The area is known for its strong currents that can take swimmers and tourists by surprise