Gastrointestinal stromal tumor (GIST) of alimentary tract has an incidence of about 1 per 100,000. Mesenteric GIST are rare and constitute less than 1 % of all gastrointestinal malignancies. Heterotopic pancreas in the jejunum is encountered incidentally and the incidence ranges around 0.2-0.9% of gastrointestinal surgeries. Here we present a rare case of 37 year old male who presented with acute intestinal obstruction and was operated immediately. On exploratory laparotomy, there were two masses, one in the mesentery and the other in the jejunum. Histologically the mesenteric mass was reported as malignant gastrointestinal stromal tumor and the jejunal mass was reported as heterotopic pancreas.