What to Know 26-year-old Joey Comunale of Stamford, Conn., has not been seen since entering the Grand Sutton building in Manhattan Sunday

Police say there are signs of foul play

Crime scene investigators brought out bags of evidence, including bloody clothes and sheets, sources say

Police continued to collect evidence from a luxury apartment building in Manhattan on Wednesday morning, three days after a 26-year-old Stamford, Connecticut, man went missing while visiting the location.

Police say there are signs of foul play in the disappearance of Joey Comunale, who was last seen on surveillance video entering the Grand Sutton building near the corner of East 59th Street and First Avenue on Sunday morning, police said. He has not been seen since.

Search dogs were brought in to try and locate the missing man Tuesday evening. Crime scene investigators were seen carrying out bags of evidence from the apartment, and law enforcement sources said they found bloody clothing and bloody sheets, along with a luggage cart that had evidence of blood on it, too.

Video captured exclusively by NBC 4 New York shows a man being arrested at the scene and placed into the back of a police vehicle. It's believed to be connected to Comunale's disappearance.

Comunale's family declined to comment, but friends told NBC 4 he graduated from Hofstra University, was an athlete and wasn't the type to get into trouble.

One friend said, "Joey is an amazing hockey player and teammate from an incredibly close and loving family. We are hopeful that he will be returned home to those that love him the most."