Bitcoin's price has fallen below the $81,000 mark, driven by weak market liquidity over the weekend and geopolitical tensions in the Middle East. The cryptocurrency experienced a 2.2% decline in the past 24 hours, as reported by CoinDesk. The market's cautious sentiment is further exacerbated by uncertainty surrounding a potential US government shutdown. Weekend trading typically sees reduced volumes, leading to increased price volatility. Currently, Bitcoin remains in a range-bound trading pattern, with traders closely monitoring the $80,000-$82,000 range for potential buying interest. Continued selling pressure could result in further price declines if new buyers do not emerge.