He is accused of murdering the teaching assistant between 12 August and 24 August. Police have appealed for information and said officers were keen to trace the driver of a black BMW car, who is believed to have witnessed the incident. The pair, from Accrington, are being held in police custody.
The boy, from Accrington, who cannot be named because of his age, appeared at Blackburn Magistrates' Court. The teenager was remanded into secure accommodation ahead of a hearing at Preston Crown Court on Tuesday.
Last week, her children - Steven, ses, and Sarah, 16 - described her as "a great mum and wife, much-loved daughter, loving aunty and sister-in-law and a great friend too". Mother-of-two Lindsay Birbeck, 47, was missing for almost two weeks before her body was found at Accrington Cemetery, Lancashire, on 24 August.
Related Topics. The Peugeot was later recovered from Lemonius Street.
Hundreds of people ed searches for Mrs Birbeck when she disappeared from her home in Huncoat, Accrington. The two year-old men have been arrested on suspicion of causing death by dangerous driving.
Related Topics. He suffered serious injuries and was pronounced dead at the scene, Lancashire Police said.
Paying tribute to Mr Sodagar, who was from Accrington, his family said he "put smiles on many faces" and was "best known for his swingers room energy, always bringing people together, a believer in love and a man of good morals and principles".