A suicide attack at a government office in northwest Pakistan has killed at least 12 people, officials say, the BBC reports.

A bomber on a motorbike reportedly drove into the gate of the National Database and Registration Authority in Mardan.

“The death toll stands at 12 now, many others are injured,” district police chief Faisal Shahzad said.

The attack is one of worst since a security crackdown following the Peshawar school massacre a year ago.