This 1973 booking photo, originally made by the Maricopa County Sheriff's Office in Phoenix and released Thursday, Nov. 2, 2017, by the New Hampshire Office of the Attorney General, shows Terry Peder Rasmussen. Authorities filling in the gaps in the life of Rasmussen, suspected of killing six women and children — including his toddler daughter — want to learn about a woman he was seen with in the 1970s, saying she may be the young girl's mother. Authorities believe that among his victims, he killed an unnamed woman and three girls whose bodies were found in barrels near a New Hampshire state park in 1985 and 2000, and that he fathered one of them. Rasmussen died in a California prison in 2010. (Maricopa County Sheriff's Office/New Hampshire Office of the Attorney General via AP)
This 1973 booking photo, originally made by the Maricopa County Sheriff's Office in Phoenix and released Thursday, Nov. 2, 2017, by the New Hampshire Office of the Attorney General, shows Terry Peder Rasmussen. Authorities filling in the gaps in the life of Rasmussen, suspected of killing six women and children — including his toddler daughter — want to learn about a woman he was seen with in the 1970s, saying she may be the young girl's mother. Authorities believe that among his victims, he killed an unnamed woman and three girls whose bodies were found in barrels near a New Hampshire state park in 1985 and 2000, and that he fathered one of them. Rasmussen died in a California prison in 2010. (Maricopa County Sheriff's Office/New Hampshire Office of the Attorney General via AP)

Concord — Authorities piecing together the life of a deceased man suspected of killing at least six women and children — including his toddler daughter — want to learn about a woman he was seen with in the 1970s, saying she may be the toddler’s mother.

Terry Peder Rasmussen, who died in a California prison in 2010, used multiple names in numerous states. Authorities believe his victims included an unnamed woman and three girls whose bodies were found in barrels near a New Hampshire state park in 1985 and 2000 and that he may be the father of one of the girls.

Rasmussen lived in Phoenix in the late 1950s and early 1960s, for part of 1969 and then in 1973, authorities said. He was married and had three daughters and a son.

The Maricopa County Sheriff’s Office arrested him on April 30, 1973, as a fugitive from justice. Authorities on Thursday released a booking photo from that time, hoping people may recognize him and help account for his whereabouts in the mid- and late-1970s.

Rasmussen was arrested again in Phoenix in June 1975 on an aggravated assault charge. It’s believed that his wife and children left him shortly afterward.

Authorities said Rasmussen was last seen by his family in Payson, Arizona, around Christmas of 1975 or 1976. He was in the company of an unidentified woman. He indicated he was living in an apartment complex in Ingleside, Texas, at the time.

“Authorities remain very interested in identifying the unknown female who was with Mr. Rasmussen during that visit, as she may be the mother of Mr. Rasmussen’s daughter who was found murdered in Allenstown,” New Hampshire Attorney General Gordon MacDonald said in a statement released on Thursday.

Authorities know little about Rasmussen’s whereabouts from that time to 1978 but say it’s likely he spent time in Texas, Arizona, California, Oregon, Virginia and New Hampshire.