German authorities have arrested a Palestinian man in connection with an alleged al-Qaeda plot to carry out a suicide attack in Iraq.

German federal prosecutors said Sunday they had arrested a stateless Palestinian identified only as 28-year-old Ismail Abu S. The prosecutors said they believe he took part in an insurance scam to raise money for the intended operation.

They added that they will conduct further investigations to determine whether he was aware of the al-Qaeda connection.

German authorities previously arrested the man's brother and an Iraqi alleged to have ties to al-Qaeda.