A woman with four children were reportedly "forced into a van" in Torfaen, police say.
Gwent Police said it is investigating "suspicious behaviour" that happened on Broadway, Pontypool, just after midnight on Monday.
The force said it was called by someone who reported seeing a woman being "forced into a van by a man".
The woman also had four children with her.
The van was a silver Ford Transit Connect, which had black bars on the top.
Officers say enquiries are ongoing to try and find the van and identify those involved.
The woman was in her twenties or thirties and about 5'5" tall, with brown hair that was tied up in a bun, according to police.
The four children are believed to be between the ages of two and seven.
Read more from Sky News:
Passenger dead and 15 in hospital after train crash
Surfer killed by swordfish in Indonesia
The man involved was described as being in his twenties or thirties, of a medium build and wearing a lime green top.
Gwent Police has asked anyone who was in the area at the time and who may have witnessed the incident to get in touch quoting reference 2400349933.
(c) Sky News 2024: Police probe as woman with four children 'forced into van' in Pontypool
Chris Kaba was 'core member' of gang and 'gunman in nightclub shooting' days before he was killed by police
Paul Gascoigne's daughter says she was groomed and sexually assaulted by Al Fayed
Body found in search for missing nurse Victoria Taylor
Kinahan gang boss who ran arms cache plot from prison to get lighter sentence jailed for six years
Prisoner released early thanks prime minister, but No 10 doesn't see funny side
Xander Irvine: Death of boy, 3, in Edinburgh could have been avoided as woman, 91, 'should not have been allowed to drive'
Strictly's Giovanni Pernice claims only point of Amanda Abbington allegations 'were to destroy me'
UK economic forecast boosted by IMF
Water companies seek even higher bill increases than first indicated
