One person was killed and another one injured in a communal clash in Khambhat city of Gujarat during a procession taken out on the occasion of Ram Navami on Sunday, while Himmatnagar city in the state also witnessed violence between members of two communities during a similar event, police said. The clashing groups indulged in stone-throwing and arson at both the places and the police had to lob tear gas shells to bring the situation under control, officials said.