BOSTON >> Authorities are investigating the suspicious death of a 34-year-old suburban Boston man who was found lying on a sidewalk in Chelsea.

WCVB-TV reports that officers responded to the Cottage Street area just before 5 a.m. Sunday and found Alex Perez.

The Chelsea man was taken to Whidden Hospital in Everett where he was pronounced dead. The cause of his death wasn't immediately known. Police are calling it suspicious.