Amber alert issued for 4-month-old boy; N.Y. triple murder suspect Matthew Slocum sought

(CBS/WBZ/WRGB) - An Amber Alert has been issued in Massachusetts, Connecticut, New Hampshire and New York for a 4-month-old boy who is believed to be traveling with his mother, Loretta Colegrove, and father Matthew Slocum, the suspect in a triple-homicide that occurred Wednesday morning in New York State.

Police said the 23-year-old Slocum may be holding Colegrove and their child, Raymond Slocum, against their will. The child, according to Massachusetts State Police, "is believed to be in extreme danger."

Wednesday afternoon, police reported credible sightings of the suspect in Gilsum, N.H., reports CBS station WBZ. 

Matthew Slocum is a suspect in the deaths of three people who were killed in a suspicious house fire in White Creek, N.Y.

The victims in the fire included Dan Harrington, a deputy highway superintendent, and his wife, Lisa, Slocum's mother. Dan Harrington's son Josh also died in the early morning fire Wednesday in White Creek, 35 miles northeast of Albany, reports CBS affiliate WRGB.

Slocum is around 6-feet tall and weighs 195 pounds. He has brown hair and is believed to have swastika tattoos on his forearms.

Loretta Colegrove, 25, is 5-feet-9-inches tall and weighs approximately 190 pounds, with long, straight reddish brown hair typically worn back with a white or light blue scrunchie. Colegrove was last seen wearing a spaghetti-strap light blue tank top, blue jean shorts, and flip flops.

Slocum is driving a black 2003 Ford Mustang with two doors, with New York license plate DED1769.