We've just received this update from South Wales Police:
South Wales Police officers investigating the circumstances surrounding a fire at Severn Road, Cardiff have bailed a 31 year old female pending further enquiries.
The 36 year old man previously arrested remains on police bail.
The body of seven-year-old Yaseen Ali was discovered after a fire at his home in Severn Road, Cardiff on Monday 12 July 2010. Read our earlier report here.
Anyone with information is asked to contact the police on 02920 222111 or Crimestoppers on 0800 555111.