A father and son have appeared in court charged with the murder of a four-year-old family member who died in a pickup truck crash.Patrick Maughan, 53, and Owen Maughan, 27, of Darenth, Kent, appeared at Sevenoaks Magistrates' Court to each face four charges over the fatal crash in New Barn Road, near Dartford, on Sunday.They are each accused of the murder of four-year-old Peter Maughan. Medics fought to save the boy's life but he was later pronounced dead in hospital.The pair are also accused of causing grievous bodily harm to Peter's father Lovell Maughan, 24, who is in a critical condition in hospital.They are also charged with the attempted wounding with intent of Peter's sister, one-year-old Annarica Maughan, and the mother of the children Hayley Maughan.It is understood that Hayley Maughan is the first cousin of Owen Maughan.The two suspects were dealt with in short, separate hearings, speaking only to confirm their identities.They were remanded in custody and will next appear at Maidstone Crown Court, either on Thursday or Friday, with a provisional plea and trial preparation hearing date set for July 2. The Maughan family. Peter (bottom centre) died while his mother Hayley (left), baby sister Annarica and father Lovell (right) were injured Peter Maughan, 4, was killed when a Ford Ranger he was travelling in with his father Lovell (pictured) and one-year-old sister crashed with another Ford Ranger on New Barn Road, Dartford, on Sunday night Father, Lovell, remains critically ill in hospital, while his daughter has since been discharged with minor injuries The young family had been travelling in a Ford Ranger when it was involved in a crash with another Ford Ranger at around 9.30pm. Grieving friends and family have flooded social media with tributes for Peter, who was affectionately known as Peter Rabbit.One person wrote: 'Rest in peace Peter Rabbit please everyone keep them in your prayers it’s a cruel world.' While another said 'this is the saddest thing I've heard' as they said they had never seen Peter without his mother by his side.'Keep her and her husband in prayer and her beautiful little baby boy may you watch over her and him I can’t imagine what she’s going through,' another tribute read.'Can not believe I’m writing this RIP Peter rabbit. [He] was the kindest little boy loving child,' another friend added. Detectives are continuing to appeal for any information from people who may have witnessed the crash.A spokesman for Kent Police said: 'Two men have been charged with murder following a collision in which a child died. Patrick Maughan, 53, (pictured) appeared at Sevenoaks Magistrates' Court alongside Owen Maughan, 27, to each face four charges over the fatal crash The crash between two pickup trucks happened on New Barn Road, Dartford (pictured) 'Officers were called just before 9.30pm on Sunday to reports of a collision involving two vehicles on New Barn Road, Dartford.'Three people from the same vehicle were taken to hospital. A four-year-old boy died at the hospital and a 24-year-old man remains in a critical condition. A one-year-old girl received minor injuries.'On Monday officers arrested two men in connection with the incident. 'Today, the Crown Prosecution Service authorised Patrick Maughan, aged 53 years and Owen Maughan, aged 27 years, both from Hill Rise, Darenth, to be charged with the murder of a four year old boy.'They have also been charged with causing grievous bodily harm with intent and attempted wounding with intent relating to the two people injured.'Both are due to appear at Sevenoaks Magistrates' Court later today.'Detectives continue to appeal for any witnesses to the collision which involved two grey Ford Rangers.'Anyone with information which may assist the investigation, including CCTV or dashcam footage, is urged to contact the Major Crime Unit via the Major Incident Public Portal (MIPP) using this link Public Portal'Alternatively call the Major Crime Appeal Line on 01622 652006 to leave contact details. You can also call Crimestoppers anonymously on 0800 555111 or complete their online form.'