Austria has been rocked by the murders of four women over a span of eight days, with migrant suspects in three cases.
A 21-year-old, originally from Ethiopia and holding Spanish citizenship, is suspected of stabbing his own sister to death at Vienna's central train station on Tuesday.
Police are searching for a motive and the man is now undergoing psychiatric evaluation, according to Kronen Zeitung.
On January 13, the body of 16-year-old Manuela K. was discovered by her mother under a pile of leaves in a park in Wiener Neustadt. She had reportedly been strangled.
Police arrested Yazan A., a 19-year-old Syrian migrant who was already known to police.
Yazan had allegedly dated Manuela in the past, and police were reportedly aware that he had harassed and abused her.
Police say he confessed to the crime, but showed no remorse.
On January 9, Roland H. reportedly stabbed his former partner in front of a residential building in Krumbach, according to Kurier.
Silvia K. suffered six knife wounds and Roland was charged with her murder.
On January 8, an Austrian citizen of Turkish origin stabbed his wife at least 38 times in front of their children, according to Compact.
"According to police, Senol D. is to be regarded as 'Islamist fundamentalist,'" Compact reports. "Since summer 2018, more than 30 reports have been filed against him."
Austrian Interior Minister Herbert Kickl has responded to the rash of killings, calling for changes to Austrian asylum law and a zero-tolerance policy for migrants who commit crimes.
Raheem Kassam, former editor-in-chief of Breitbart News London, has warned for years about the Islamic invasion into Europe and has now been proven right.
(PHOTO: GEORG HOCHMUTH/AFP/Getty Images)