India, Aug. 7 -- More than six months after Nancy Guthrie disappeared, a neighbor says FBI agents were seen searching the desert brush behind her Tucson, Arizona home, while a retired law enforcement official says recent monsoon rains may have changed the landscape and possibly exposed new evidence.

Nancy Guthrie has now been missing for over six months and investigators are running low on leads. According to the reports of RadarOnline and Fox News, a neighbor of Savannah Guthrie's missing mother said she spotted FBI agents searching through the brush behind her home after heavy monsoon rains hit Tucson.

According to Fox News Digital, the neighbor said she saw the agents in late July, just a few days before Nancy Guthrie's disappearance...