ailand's top police officer Saturday said a man arrested in connection with last week's deadly Bangkok bomb attack was "unlikely" to be an international terrorist and was motivated by a "personal feud".

"He is a foreigner, but it's unlikely that he is an international terrorist, it's a personal feud," national police chief Somyot Poompanmoung told reporters at the Royal Thai Police headquarters as broadcast live on Thai PBS.

"He got angry on behalf of his friends and family members," Somyot added, without elaborating further.