Yvonne Walsh death: Man arrested over murder of Birmingham mother and baby son is 'unfit to be interviewed' Yvonne Walsh discovered dead with son Harry at house in Birmingham Police launch a murder inquiry and question her 28-year-old man Murder suspect is 'currently deemed unfit to be interviewed', police say Neighbours had raised concerns about safety of Walsh, 25, and her son Case referred to police watchdog due to 'previous contact between police and the person in custody' By Paul Bentley, Mark Duell and Tom Gardner A man arrested over the death of a woman found dead alongside her baby son has been 'deemed unfit to be interviewed' by officers after being arrested on suspicion of murder, police revealed. The 28-year-old is currently being assessed by mental health experts while in custody, West Midlands Police have said. Yvonne Walsh, 25, was discovered dead with her nine-month-old son Harry at the house in Birmingham at 10.30am, yesterday, after concern was raised for their welfare. Police arrested a man around seven hours later in the Sandwell area of the West Midlands. A police spokesman said: 'The victims have yet to be formally identified but are believed to be Yvonne Walsh and her son Harrison Walsh, known as Harry. A man arrested on suspicion of both murders is currently in a secure facility following an assessment by mental health professionals. He is currently deemed unfit to be interviewed by officers at this stage, but this is being constantly reviewed. The person in custody is known to the victims and officers are keen to stress that they are not looking for anyone else in connection with the killings. Cordon: A policeman guards the scene at Chells Grove, Billesley, West Midlands, where a young mother Yvonne Walsh and her nine-month-old son Harry were found murdered Post-mortem examinations are due to take place later today to determine the cause of the victims' deaths. Meanwhile, forensic inquiries are continuing at the house in Chells Grove, which remains subject to a police cordon. The police spokesman added: 'A serious case review and a domestic homicide review are expected to take place in due course, as is routine practice when a child dies in these circumstances. Due to previous contact between police and the person in custody, West Midlands Police has informed the Independent Police Complaints Commission who will look into any police involvement in due course. Grief: A bunch of flowers and a teddy left at the scene in Chells Grove, Billesley, West Midlands - the scene of the horrific double murder of a mother and her young son Last night officers had cordoned off the house while investigators examined the scene. The bodies were found after neighbours raised concerns about the safety of Miss Walsh and her son. Neighbour Gulfraz Hussain, 30, said: "I can't believe what's happened. It's tragic. I've had people nick my number plate and there's burglaries but nothing like this has ever happened. Another neighbour, who did not want to be named, said: "I heard from people who had talked to the police that Yvonne and Harry were killed on Friday and only found by police when someone rang to say they couldn't get through to her on the phone. Her brother arrived at the house earlier and was in floods of tears. It is so sad, she was a lovely, warm person and a great mum, she loved her kids. We chatted when I saw her taking her kids out and I never had any impression she had any problems at home. She just seemed like a normal, happy mum. One resident leaving Chells Grove today said police had initially informed local people that a serious incident had taken place in the street. The neighbour, who declined to give her name, told reporters: 'We saw her (Ms Walsh) around with her little baby but she kept herself to herself to be honest. It was really surprising when I heard what had happened because I have not heard or seen anything happening at the house before. 'It was yesterday morning we saw the police arrive at about 10 o'clock - they told us there had been a serious incident and we found out on the news what had happened.' Another resident, 62-year-old Susan Butler, paid tribute to Ms Walsh and described news of the deaths as truly shocking. 'You just don't envisage something happening like that,' she said. She was a pretty quiet girl and I saw her last week holding the baby. 'It's really, really shocking and all the neighbours are probably feeling the same.' Police launched a murder inquiry and have questioned a 28-year-old man. He was arrested yesterday in Dudley, West Midlands. The man was known to police, who have as a result referred the case to the Independent Police Complaints Commission. Officers are not looking for anyone else in connection with the deaths. Officers also plan a serious case review and a domestic homicide review, as is normal practice when a child dies in suspicious circumstances. Miss Walsh is believed to have an older daughter who was not in the house at the time. Superintendent Jo Chilton, from West Midlands CID, said: "This is a terrible crime and my thoughts are with the family of the victims. It is so sad, she was a lovely, warm person and a great mum, she loved her kids Neighbour Gulfraz Hussain Superintendent Andy Shipman, from Birmingham South local policing unit, said: "The awful murders will send shockwaves through the community. Officers will be highly visible in the area in the coming week, reassuring local people. I want to reassure the community that we believe there is no ongoing threat to the public.