Detectives are questioning a man on suspicion of murder.
A 30-year-old man was arrested this morning by detectives investigating the death of Sidney Cox.
Mr Cox, 57, died after being attacked at a house on Middleton Lane, in Thorpe, near Rothwell, on Saturday, August 24 at around 7.20pm.
He was taken to Pinderfields Hospital before being transferred to Leeds General Infirmary where he died in the early hours of Sunday, August 25.
Anyone with any information should call the Homicide and Major Enquiry team on 101, or Crimestoppers, anonymously, on 0800 555111.