An unidentified extended comptel source in the Vela/Carina region

We report evidence from five years of COMPTEL observations for a source of extended gamma-ray emission in the Vela/Carina region which is mainly seen in the 3-10 MeV range. The emission remains unexplained by standard large-s cale models of the galactic diffuse continuum radiation and cannot be attri buted to a single point source. Its projected location is inside the Gum ne bula, about 10 degrees from the Vela pulsar/SNR, and adjacent to the Vela O B2 association and the so-called IRAS Vela shell. There are two possible EG RET counterparts in this region. These are unidentified and possibly extend ed. The production site of the gamma-rays cannot be identified, but a diffu se origin related to this very nearby (similar to 400 pc) region of starfor ming activity and supernova remnants seems plausible.