BUDAPEST (Reuters) - Hungarian police have detained a Pakistani migrant wanted for murdering around 70 people in his home country, Hungarian and Austrian police said on Wednesday. In a statement, police in Hungary s Bacs-Kiskun county said they had stopped a group of illegal migrants near the southern border with Serbia on Tuesday and identified the 35-year-old man among them. The police identified him only by the initials A.Z. and said he was the target of an international arrest warrant issued by Pakistan. They said he was being held in Hungary but gave no further details. Austrian police issued a statement saying the arrest had been made after a tip-off from Austria to Hungarian authorities. They said the man had been planning to go to Austria with the help of people-smugglers. They declined to identify him on grounds of Austria s data protection rules.     