Partially Solved March 4, 1998 Missing Person

Rui Pedro

Eleven-year-old Rui Pedro Teixeira Mendonça disappeared from Lousada, Portugal on March 4, 1998. Afonso Dias, acquitted at a first trial in 2012, was later convicted of kidnapping and sentenced to three years in prison; he was released in 2017. Rui Pedro has never been found and was declared legally dead in 2019.

Status
Partially Solved
Date
March 4, 1998
Location
Lousada, Portugal
Age
11
Gender
Male
Decade
1990s
Where the case stands
  1. Open
  2. Partly resolvedPartially Solved
  3. Charges or trial
  4. Closed

Part of the case has been resolved; significant questions remain open.

Timeline to scale
Each dot is a dated event below; the distance between dots is elapsed time. The darker dot marks the incident.
March 4, 1998: Rui Pedro disappears from Lousada, Portugal.January 1, 2003: Afonso Dias convicted of kidnapping.October 1, 2014: Afonso Dias's kidnapping conviction and three-year sentence become final (first-instance acquittal was in 2012).19982014202629 years since the incident

On March 4, 1998, eleven-year-old Rui Pedro Teixeira Mendonça disappeared from the town of Lousada in northern Portugal. The boy had been last seen in the company of a known local man, Afonso Dias, who was later convicted of kidnapping.

The investigation revealed deeply disturbing connections to a pedophilia network. A photograph allegedly showing Rui Pedro was found during an Interpol operation targeting child exploitation websites, but the identification was never conclusively confirmed.

Afonso Dias was acquitted at his first trial in 2012 but was subsequently convicted of kidnapping Rui Pedro and sentenced to three years in prison; he was released in March 2017 and never revealed the boy's whereabouts. The case became a national sensation in Portugal and exposed failures in the child protection system.

The case of Rui Pedro remains one of Portugal's most painful unsolved mysteries. It contributed to significant reforms in how Portugal handles missing children cases and child protection legislation.

child1990s
  1. March 4, 1998
    Rui Pedro disappears from Lousada, Portugal.
  2. January 1, 2003
    Afonso Dias convicted of kidnapping.
  3. October 1, 2014
    Afonso Dias's kidnapping conviction and three-year sentence become final (first-instance acquittal was in 2012).

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Have information about this case?

Cold cases are solved when someone comes forward. Even a detail that seems minor can matter. Contact law enforcement through one of these channels:

  • The police force or sheriff's office responsible for Lousada

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Entry last updated September 29, 2026.