PORTLAND — The state supreme court today upheld the convictions of two siblings convicted in a 2008 Old Orchard Beach murder disguised as a home invasion.

Darlene George and her brother, Jeffrey Williams, were convicted of murder and conspiracy to commit murder in connection with the death of George’s husband, Winston George. Darlene George was sentenced to 40 years in prison and her brother received a life sentence.

The Maine Supreme Judicial Court disagreed with the siblings’ arguments that they should have been tried separately and about evidence linked to Rennie Cassimy, the state’s star witness and George’s longtime lover.

Darlene George also argued that her grand jury testimony – made without her being informed that she was a suspect or without warning that she could incriminate herself – should not have been allowed at trial. The supreme court noted that the lower court found George was not a target of the investigation at the time.

Williams also argued that grand jury testimony that was supposed to be excluded in his case came out when he was cross-examined. The court ruled that he was not unfairly prejudiced by that.