Rick Grimes' death in the graphic novel occurred in a rather unexpected way. He was shot, and this happened during a time of great chaos and conflict. There were various factions vying for power and resources, and Rick was right in the middle of it. His death was not just a random act but was related to the power struggles and the dangerous world they were living in. It sent shockwaves through the group he led, as they had come to rely on him so much for survival and leadership. It also made the survivors realize just how precarious their situation was, and they had to quickly adapt to a world without Rick.
Rick was shot, which was the main circumstance of his death.
The circumstances of Rick's death in the graphic novel were that he was in the middle of a volatile situation. There were threats all around, and different groups had different agendas. Amidst this turmoil, he was shot. This event was a major blow to the group he was leading. It made them question their safety and future. His death was a consequence of the lawless and dangerous post - apocalyptic world they inhabited, where violence could strike at any moment, even against the most important and influential character like Rick.