A 33-year-old man has been arrested on suspicion of murder after a man died in a gun and grenade attack.
The body of David Short, 46, was found at his house in Clayton, Manchester on August 10 after police responded to reports of gunfire.
Less than 10 minutes after Mr Short's body was discovered in Folkestone Road East, Greater Manchester Police received reports that shots had been fired at a second property, in Luke Road, Droylsden, where detectives say there was also a grenade blast.
No one was injured in the second incident.
Armed officers arrested a man in a park near the junction of Herne Street and Newton Close in Openshaw, police said.
Assistant chief constable Steve Heywood said: "Since David's tragic death, we have had armed officers on patrol in the north Manchester and Tameside areas to both reassure our communities and as part of our determination to ensure those responsible for David's death are brought to justice.
"Today, those same officers were on patrol in the Openshaw area and attended at a local park and made an arrest in connection with David's death.
"The arrest was made peacefully with no risk to any members of the public or the surrounding community.
"Our investigation remains ongoing and when we are in a position to say anything further we will do so."
Mr Short's son, amateur boxer Mark, 23, was killed in May when he was shot in the neck at the Cotton Tree pub in Droylsden after a gunman walked in and opened fire.
Three other men were shot during the attack and suffered leg and back injuries.
Earlier this month, police offered a £25,000 reward for information that would lead to the arrests of Dale Cregan, 29, from Droylsden, and Anthony Wilkinson, 33, from Beswick, who are wanted in connection with the two attacks on August 10.
Cregan is also wanted for questioning over the murder of Mark Short.
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