A 19-year-old ISIS-inspired suspect on Thursday admitted plotting attacks on the iconic Buckingham Palace and an Elton John concert among other potential london targets. Haroon Syed pleaded guilty at the Old Bailey court here to “researching, planning and attempting to source” materials for home-made explosive devices for use in attacks on Buckingham Palace and an Elton John concert in Hyde Park, among other potential london targets. Syed, warned by Judge Michael Topolski that a life sentence is likely to be handed down, will be sentenced on June 8 after a probation and psychiatric report.