Splenic abscess is a rare and potentially life-threatening disease. Because of the nonspecific clinical picture, it still remains a diagnostic challenge. Rupture into the peritoneal cavity is the most severe complication because it is associated with a high mortality rate. We report a case of delayed splenic rupture complicated by splenic abscess following a flank injury leading to hemoperitoneum in a 45-year-old man. Abdominal sonography showed multiple splenic abscesses with intraperitoneal and perisplenic fluid accumulation. This diagnosis was confirmed by computed tomographic scan of the abdomen. Abdominal paracentesis yielded uncoagulated blood and hemoperitoneum was suspected. He was urgently treated with fluid resuscitation, blood transfusions, broad-spectrum antibiotics and emergency splenectomy. His postoperative course was uneventful and he was discharged in good condition after 7 days.