The Chinese government is taking draconian measures to slash birth rates among Uighurs and other minorities as part of a sweeping campaign to curb its Muslim population, even as it encourages some of the country’s Han majority to have more children.

While individual women have spoken out before about forced birth control, the practice is far more widespread and systematic than previously known, according to an AP investigation based on government statistics, state documents and interviews with 30 ex-detainees, family members and a former detention camp instructor. The campaign over the past four years in the far west region of Xinjiang is leading to what some experts are calling a form of “demographic genocide.”…

The population control measures are backed by mass detention both as a threat and as a punishment for failure to comply. Having too many children is a major reason people are sent to detention camps, the AP found, with the parents of three or more ripped away from their families unless they can pay huge fines. Police raid homes, terrifying parents as they search for hidden children…

“It’s genocide, full stop. It’s not immediate, shocking, mass-killing on the spot type genocide, but it’s slow, painful, creeping genocide,” said Joanne Smith Finley, who works at Newcastle University in the U.K. “These are direct means of genetically reducing the Uighur population.”