Metropolitan Police murder detectives investigating the death of Daniel Young in Morden have arrested a man on suspicion of killing the Coventry University lecturer. The 37-year-old man has been taken into custody at a south London police station where he remains.

The arrest comes after the Met's Homicide and Major Crime Command said it was investigating a nearby stabbing that happened half an hour before Young, 30, was attacked. Detectives are working to see if there is a link between Young's death and an earlier incident at 7.25am on 19 January in nearby Lewis Road that saw a 23-year-old man stabbed in his buttocks. He suffered non-life threatening injuries and remains in hospital.

The two incidents have not been linked forensically or evidentially, but due to the time and close proximity to Young's murder, the HMCC is working to establish if there is any evidence that the same suspect has committed both attacks.

The arrest on suspicion of murder is the third after a 35-year-old man was detained and later bailed to return in late February pending further enquiries. Another man, a 26-year-old, was arrested on the day of the murder on suspicion of wasting police time and suspicion of murder. He was subsequently bailed to return on a date in early March pending further enquiries.

Young was killed by a single stab wound as he walked in Kendor Gardens. Paramedics fought to save his life but he was pronounced dead at the scene. A post-mortem examination held at St George's Hospital found the cause of death to be a stab wound.

Anyone with any information is asked to contact the incident room on 020 8721 4961 or Crimestoppers anonymously on 0800 555 111 or crimestoppers-uk.org.