Police were expanding a search for bodies beyond the yard of a rooming house after digging up the sixth and seventh elderly victims from shallow graves there.

A warrant charging the boarding home's missing landlady with one count of murder was issued Monday, police said.Investigators using shovels, steel probes and a tractor found the two bodies wrapped in cloth or clothes in the yard of the two-story Victorian house, said police Sgt. Bob Burns.

The bodies, one unearthed in the front yard under a flower bed and the other in the side yard under a shed, are unidentified, like the five others. "We'll continue to dig, and we won't stop digging until we've dug up every square inch of this yard," Burns said.