The mother of Brazilian football star Rogerio, who plays for Lisbon's Sporting Club, has been kidnapped in the fourth such abduction in months.
Rogerio's football team is in Portugal's first division
Gunmen forced their way into the home of Ines Fidelis Regis in Campinas, north-west of Sao Paulo, late on Monday before making off with her.
The kidnappers have not made contact, Brazilian police said.
Earlier this month, the mother of Luis Fabiano, who plays for Portuguese team Porto, was kidnapped from Campinas.
Gunmen abducted Sandra Helena Clemente from her home in the town 100km (60 miles) from Sao Paulo.
Spate of abductions
Mrs Regis was reportedly kidnapped by three armed men who forced their way into the family home at around 2230 (0130 GMT).
Her daughter, who was in the house at the time, was gagged.
"The only information we have is that there was a kidnapping and the captors have not made contact with the family yet," a police spokesman told the Reuters news agency.
Late last year, the mother of Santos player Robinho was held 41 days before being released.
She was kidnapped in November at a family party and spent 40 days hostage before being released unharmed. A ransom was reportedly paid.
Last month, the mother of Sao Paulo striker Grafite was also kidnapped, and held for a day before she was freed by police.