At least two people are killed and six wounded after an eight-storey residential building collapsed in Istanbul, the governor's office says.

A Mexican governor and her senator husband are killed on Monday in a helicopter crash near the city of Puebla in central Mexico, the government said, just days after she had taken office following a bitterly contested election.

Two people were killed and 15 others injured in a clash between two rival groups over erecting fence around a disputed land in Brahmanpara upazila yesterday.