The 35-year-old Pakistani man was discovered when the group was apprehended near Hungary's southern borders on Tuesday, police in Bacs-Kiskun county told AFP in a statement.
"Pakistan has issued an international arrest warrant for murder for (the man) who was then arrested," said the statement, without providing further details.
Detectives in nearby Austria said that the man, who is allegedly known as the "Pakistani butcher", is a professional gunman accused of "around 70 contract murders" in Pakistan.
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)
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