Police have made more arrests in the hunt for a killer who shot a Leicester man outside a Birmingham nightclub last month.
The arrests, on Monday and Wednesday, mean seven people have been detained in connection with the shooting of father-of-one, Sylvester Koroma.
All of the detained people are from Leicester.
Mr Koroma, 35, of Highfields, died in hospital a week after he had been shot in the stomach outside a nightclub in the Digbeth area of the city.
Three men were arrested in the days after the attack.
Now, West Midlands Police has reported that two men, aged 23 and 24, were arrested on Monday, while two women, both 24, were detained on Wednesday.
Mr Koroma was shot outside the Rainbow Warehouse in the Digbeth area of the city shortly before 11pm on Saturday, August 10.
He was taken to hospital but died a week later.
The West Midlands Police detective who is leading the inquiry said he was determined to bring the killer to justice.
However,Detective Chief Inspector Sab Johal said his officers were being frustrated by the unwillingness of people, including those in Mr Koroma's "circle of friends", to speak to his team.
Det Chief Insp Johal said: "I am disappointed by the lack of co-operation from people, who were at the Rainbow Warehouse that night in coming forward to give us information.
"But, despite this, the investigation is ongoing and we remain dedicated to tracing those responsible.
"The motive for the shooting remains unclear but we believe this was a targeted attack.
"I re-appeal for anyone who was in the area at the time and has not yet spoken to police to get in touch.
"I would like to reassure anyone who has worries of any sort that stops them coming forward and speaking to the police, that we can support them in many ways to address those fears."
Mr Koroma's family issued a statement through West Midlands Police the day after he died.
They said: "Sylvester was a kind, gentle, loving father, brother, son and friend.
"He was a very happy person, who always lit the room up with his smile.
"Sylvester always lived life to the fullest and was admired and respected by many.
"He warmed the hearts of anyone he knew and will be truly missed."
The details of the arrests so far are:
Two men, aged 29 and 34, were arrested on August 11 and released on bail.
A 25-year-old man was arrested on August 15 and bailed for further inquiries.
Two men, aged 23 and 24, were arrested on Monday on suspicion of conspiracy to murder. They have been bailed.
A 24 year old woman who was initially arrested on August 15 and released on bail was re-arrested on Wednesday on suspicion of assisting an offender.
Another 24 year old woman was detained on Wednesday on suspicion of assisting an offender.
Contact the incident room on 0121 626 7191 or Crimestoppers, which is anonymous, on 0800 555 111.
