FACTBOX - World's most deadly serial killers

(Reuters) - A Russian supermarket worker was sentenced to life in jail on Monday for killing 48 people.

Alexander Pichushkin had asked the court earlier this month to add another 11 victims to his tally. A jury found him guilty last week of 48 murders and three attempted murders.

Following is a list of some of the world's most notorious serial killers in recent history:

* PEDRO ALONSO LOPEZ, Colombia. Nicknamed the "Monster of the Andes", he was suspected of killing 300 people in Colombia, Ecuador and Peru. He was convicted in 1980 on 57 charges.

* HAROLD SHIPMAN, Britain. The doctor from Manchester was sentenced to 15 life terms for murdering elderly and middle-aged female patients between March 1995 and July 1998. A final report in 2005 said the so-called "Dr. Death" probably killed 250 people in all, starting when he began practising medicine. Shipman committed suicide in January 2004.

* HU WANLIN, China. Arrested in January 1999 on suspicion of causing the deaths of 146 people. A self-proclaimed healer and an ex-convict, he called himself a doctor with magical healing powers. It is unclear how he caused the deaths.

* LUIS ALFREDO GAVARITO, Colombia. In 1999, Gavarito confessed to the murders of 140 people.

* DONALD HENRY GASKINS, United States. Executed in 1991 for a series of murders, Gaskins is believed to have killed more than 100 people.

* JAVED IQBAL, Pakistan. Iqbal was sentenced to death in 2000 for murdering and mutilating 100 children.