Any independent verification required?

The BBC report that

'An 18-year-old shepherd has died after being shot by Israeli settlers near the West Bank city of Nablus, Palestinian officials say.

Witnesses say the man was attacked by four Jewish settlers. Israeli officials say they are looking into the incident. '

Oddly unlike here, the BBC seem not to worry that 'The BBC has been unable to verify... independently.'

Do the BBC only need to verify documents or reports that show Palestinians unfavourably? Is that unbiased?