(y)“terrorist” means any person who, with intent to overawe the Government as by law established or to strike terror in the people or any section of the people or to alienate any section of the people or to adversely affect the harmony amongst different sections of the people, does any act or thing by using bombs, dynamite or other explosive substances or inflammable substances or fire-arms or other lethal weapons or poisons or noxious gases or other chemicals or any other substances (whether biological or otherwise) of a hazardous nature in such a manner, as to cause or is likely to cause death of, or injury to, any person or persons, or damage to, or destruction of, property or disruption of any supplies or services essential to the life of the community;