BIDDEFORD – A 38-year-old man from New Mexico was arraigned Monday on a charge that he sexually assaulted a 14-year-old girl whom police say had the mental capacity of a 7-year-old. Daniel Eneagu of Albuquerque, N.M., made his first court appearance in Biddeford District Court. Eneagu, who was arrested Friday, is being held without bail in the York County Jail. Police said they believe other people also participated in the assault, and that there may be other arrests. The victim, who is from Gorham, was allegedly assaulted in Old Orchard Beach after disappearing Thursday night while shopping.