Armed police raided a block of flats linked to the Olivia Pratt-Korbel murder investigation.
Merseyside Police strike teams descended on the flat in Huyton, blocking the entrance to anyone coming or going at around 11pm on Thursday night. Search teams were later seen carrying evidence bags and protective forensic suits up a stairwell to one of the flats, while Matrix vans were parked in the complex.
On Friday morning, a 36-year-old man from the Huyton area was in custody on suspicion of little Olivia's murder and two counts of attempted murder. He is being questioned by detectives.