A pair of fires leaves two dead, two buildings gutted in Waltham

A pair of fires – one of which left two dead – gutted homes in Waltham this morning as the coldest temperatures in a decade froze the region.

The first, a two-alarm blaze on Ash Street that began shortly after 2 a.m., killed two people. A man died at the scene, while a woman died at a local hospital. Neither of their identities had been released as of noon Monday.

Then, shortly after 8 a.m., another fire swept through a home about a mile away, on School Street. That fire was a four-alarm blaze.

Both fires are under investigation and it was not immediately clear whether the two were connected.

This morning brought the coldest temperatures Logan Airport has seen since 2004. The wind chill hit 28 below.