Authorities are investigating a crash in Avon that killed two and hospitalized three on Monday morning.

A black Nissan crashed into a telephone pole just before 3 a.m. Names have yet to be released in that crash pending next of kin notification. An investigation into the accident continues.

State Police, meanwhile, are investigating another fatal crash in Franklin that killed a 31-year-old Whitinsville woman Sunday.

The crash occurred around 12:18 p.m. after the driver of a 2014 Ford Focus struck a guardrail just before exit 17. The driver of that car, according to State Police, was Crystal A. Legassey of Oxford. The crash killed the passenger in the car, Legassey’s sister, Ashley N. Hartung, instantly.

No charges have been filed at this time and the cause of the crash remains under investigation.