Connecticut State Police on Wednesday joined the law enforcement agencies involved in the search for a missing 11-year-old Massachusetts boy that approached the state line. Aiden Blanchard was last seen Feb. 5 around 11:30 a.m. when he was walking in the Willamansett area of Chicopee, Mass., according to Massachusetts State Police. He was believed to be headed toward the Medina Street boat launch along the Connecticut River. The boy was described by police as 5-feet, 100 pounds with brown hair and blue eyes. He was last seen wearing a red ski jacket and black ski pants. "The Connecticut State Police have been requested to assist in the search of Aiden," State Police Trooper First Class Pedro A. Muniz said. "You can expect to see a police presence on the Connecticut River today." Chicopee police and various other local and state agencies in Massachusetts have been actively searching for Blanchard for more than a month, with a focus on the Chicopee and Connecticut rivers. On Monday, Chicopee police urged residents to "leave the search and recovery efforts to the professionals" after word spread requesting kayakers help search for the missing boy. "We have spoken to Aiden's mother as well as other family members and they are in agreement that the river is dangerous," police said. "This search poses many safety concerns from the temperature of the water, ice, debris and the strength of the current. The safety of everyone is our upmost concern. The Chicopee Police are requesting everyone to please stay off the river. All agencies involved will continue with the recovery efforts." Divers, boats, drones and helicopters are among the resources law enforcement officers have used during the search. Massachusetts State Police said a flight crew from the agency's Air Wing did an aerial search along the Connecticut River last week from its banks from the Massachusetts Turnpike down to the Connecticut state line, but found no evidence related to the boy's disappearance. "The operation remains focused on locating Aiden, or any evidence showing his direction of travel or whereabouts," Massachusetts State Police said. "All evidence known thus far suggests Aiden was alone and near the river when he went missing. Based on the information currently known to detectives, no foul play is suspected at this time. All leads continue to be investigated." The National Center for Missing and Exploited Children have created a missing persons poster for Blanchard. Anyone with information is asked to call Chicopee police at 413-594-1740, or NCMEC at 1-800-THE-LOST.