West Yorkshire Police say they were called to a property in Springhall Gardens at 1am yesterday after concerns were raised over the safety of a baby boy.
The baby was taken to hospital where he later died. The two women, aged 21 and 47, were arrested on suspicion of neglect and have been released on bail.
Detective Superintendent Simon Beldon of West Yorkshire Police said: “We are in the very early stages of our investigation but following initial enquiries have arrested two women in connection with the death of a baby boy from Halifax.
“I would urge anyone who thinks they could have information that may be beneficial to our ongoing enquiries to call our Protective Services department on 101 or give information anonymously to Crimestoppers on 0800 555 111.”