Detectives have finished forensically examining a Logan house in relation to the suspected murder of schoolgirl Tiahleigh Palmer, while her mother has responded to online trolls who have criticised her.  Tiahleigh, 12, was last seen at her Logan school on October 30 last year, and her remains were found by a Gold Coast riverbank on November 5.  Today, police left a home on Logan Reserve Road in Waterford with bags of evidence, after spending four days examining the vacant housing commission property.  Yesterday, police revealed a number of vehicles and other properties had also been searched.  9NEWS understands that Logan resident Christine Uwamahoro and her 15-year-old son Elijah are among several people who have been interviewed by detectives.  "They asked my brother at a different time, but they kept on coming and asking her, a few days," Ms Uwamaharo's younger son Jean-Claude translated.  Police at the Waterford property.  Ms Uwamaharo said she was shocked to be interviewed.  Tiahleigh's mother Cyndi Palmer has told 9NEWS she is satisfied that the investigation is progressing, and feels vindicated about her decision to make a public appeal on March 15.  Tiahleigh's mother made a public appeal for information. (AAP)  Her appeal sparked a flood of new information being given to police, some of which led police to focus on the Logan Reserve Road property.  However, Ms Palmer said she has been the victim of online abuse.  Police at the Waterford property. (Twitter / @PhilWillmington)  She had been abused for appearing emotionless during her interview, she told 9NEWS.  Ms Palmer said she wasn't fazed by the criticism and hopes that her appeal helps lead police to her daughter's killer.  Police have renewed the appeal for anyone with information about Tiahleigh’s death to come forward,  "Anybody who might have seen Tia or anyone fitting the description of Tia on Logan Reserve Road or on the surrounding streets on that Friday, October 30… we would ask them to contact Crime Stoppers,” Detective Superintendent David Hutchinson said earlier this week.  A $250,000 reward for information leading to the apprehension of these offenders is still available, he said. The reward also offers indemnity from prosecution to anyone not directly involved in the murder.  "Any person who may have been a part of the offence but did not actually commit the murder themselves, that person can be liable to the indemnity and also the reward," he said.  Detectives have previously released security footage of the 12-year-old at Marsden State High School the day before her disappearance.  So far, the investigation has failed to find her missing backpack and school uniform.
Police are searching a house in Logan, south of Brisbane, reportedly in relation to the investigation into murdered schoolgirl Tiahleigh Palmer.&nbsp;