(CNN)Here's a selected list of people convicted of being serial killers and a short list of famous, unsolved serial killings.
Killed six people and wounded seven others in New York City between 1976 and 1977.
Raped and killed at least 16 young women in the early to mid-1970s.
Murdered nine women in California between 1977 and 1978.
Murdered 25 farm laborers in California in 1971.
Killed 17 men and boys between 1978 and 1991 in the Milwaukee area.
Convicted of killing nine women and a teenage girl between 1985 and 2007 in south Los Angeles.
Killed 33 young men and boys between 1972 and 1978.
Killed at least two women in the 1950s in a small town in Wisconsin.
Murdered dozens of young men between 1972 and 1983.
Accused of raping and killing six women in or around Baton Rouge, Louisiana, between September 2001 and March 2003.
Killed several people between 1975 and 1983.
Killed 11 people in northern California between 1984 and 1985.
In 2002, Pickton was charged with 26 counts of murder after police found the bodies of young women on his Port Coquitman, British Columbia, pig farm.
Killed 13 people in southern California in 1984 and 1985.
Wichita, Kansas serial killer active from 1977 through 1991, killed 10 people.
Committed at least nine murders in Texas, Illinois and Kentucky between 1997 and 1999.
Killed at least 48 women in the Seattle-Tacoma area between 1982 and 1998.
Killed 17 women in New York City between 1991 and 1993.
Killed four women and one man in Gainesville, Florida, over four days in August 1990. Also is responsible for a 1991 triple homicide in Shreveport, Louisiana.
Police found the decomposing and buried bodies of 10 women and the skull of one at the Cleveland home of Anthony Sowell in 2009.
Charged with murdering 10 women and one unborn fetus in south and downtown Los Angeles over an 11-year period between 1987 and 1998.
Killed at least two men in the Atlanta area between 1979 and 1981.
Killed seven men between 1989 and 1990 in Florida. The body of the seventh was never found.
Killed 15 people between 1975 and 1998 in the Spokane, Washington, area.
Eleven women were raped and strangled in Boston between 1962 and 1964.
From August to November 1888, five prostitutes were killed in London.
The Zodiac Killer is believed to have killed 5 people in northern California in 1968 and 1969.