Complex sentence: The local police immediately raided a property of Aurobindo Ghosh's where revolutionaries were trained by his organisation and along with many activists, Ghosh was himself arrested on charges of planning and overseeing the attack and for some time was imprisoned in solitary confinement in Alipore Jail.
Split into simpler sentences: The local police immediately raided a property of Aurobindo Ghosh's, where revolutionaries were trained by his organisation. Along with many activists, Aurobindo Ghosh was himself arrested on charges of planning and overseeing the attack and for some time was imprisoned in solitary confinement in Alipore Jail.