ANCHORAGE, Alaska - A man has been charged with killing an elderly Anchorage couple and sexually assaulting their 2-year-old great-granddaughter.

Police say the man refused to identify himself and is being held without bail.

Police on Saturday night were summoned by a 911 call to an apartment in the 400 block of North Bragaw Street by a woman who said a man had murdered her grandmother.

The suspect - wearing boxer shorts and socks - was captured a block from the scene.

Police discovered the bodies of 71-year-old Sorn Sreap and his wife, 73-year-old Touch Chea. Both had been beaten and police say Chea had been sexually assaulted.

The couple's granddaughter had left her 2-year-old in their care. Police say the toddler underwent surgery for sexual assault injuries.