A 15-year-old boy fatally stabbed a 52-year-old man in the heart after he accidentally spilled coffee on the teenager while leaving a McDonald 's , according to authorities . The teen , who has not been named because he is a juvenile , and 22-year-old James McLamb have been charged in the death . Police are seeking a third suspect but say they know his identity . The group was near a McDonald 's in Stamford , Connecticut last Wednesday when Antonio Muralles left the fast-food restaurant with a cup of coffee and accidentally bumped into the boy . 'Words were exchanged and then without warning , he was viciously attacked and stabbed through the heart - a very heinous , tragic incident , ' Captain Richard Conklin told the Stamford Advocate . Scroll down for video . Accused : James McLamb , 22 , has been charged in the death of a 52-year-old man who was stabbed to death in Stamford , Connecticut last week . McLamb 's 15-year-old friend allegedly carried out the stabbing . Police said Muralles was also slapped and beaten with a stick . Lieutenant Deidrich Hohn said that the juvenile was responsible for the stabbing , while McLamb assaulted the man , Fox CT reported . Muralles collapsed on a street corner around 10.15pm and was seen by emergency responders who happened to be passing . He was rushed to hospital but died several hours later . Police said information from a narcotics officer 's informant helped them hone in on the attackers . With that information , they looked through hundreds of hours of video surveillance tape from different downtown cameras and were able to place them in the area of the stabbing . Police then received a call from a witness - which they said is rare - and she was able to provide them further information that ultimately led to the arrests . Murdered : Antonio Muralles , left , had accidentally spilled coffee on McLamb , right , and his friends . Police are still seeking a third suspect in the crime . McLamb was arrested on an unrelated weapons charge on Saturday and was transferred to Stamford on Monday to be arraigned . He is being held in lieu of $ 2 million bond . McLamb did n't enter a plea . His public defender says he has n't yet read McLamb 's arrest warrant for the murder charge . Records show he has minor offenses on his rap sheet , including disorderly conduct , violation of probation , sixth-degree larceny and failure to appear at court , the Advocate reported . The 15-year-old boy was arrested at a home and his arraignment is scheduled for Tuesday . Authorities have said there is a possibility he will be charged as an adult , Fox reported . Relatives and friends have paid tribute to Muralles as a quiet , hard-working man who was employed at a factory . His colleagues were devastated when they heard the news of his death . Scene : Firefighters saw Mr Muralles collapse on a street corner outside this McDonald 's in Stamford . 'They all started bawling , it was terrible , ' co-worker Matthew Deedon told Fox CT. 'He was like a son to the owner . He was my best friend . He was family - that 's the best way to put it . ' Family members said Muralles , who lived with his niece and her husband , had hoped to move back to his native Guatemala one day to care for his ailing 92-year-old father . His remains are being flown back to the country after the Guatemalan government offered to cover the cost . His death is the city 's first homicide in 2015 .
Antonio Muralles was leaving a McDonald 's in Connecticut , Stamford last Wednesday when he accidentally bumped into a group of teens . The trio turned on him and ' a 15-year-old boy stabbed him in the heart ' With help from a narcotics informant , surveillance cameras and a witness , police were able to identify the group and have arrested two of them . James McLamb , 22 , has been charged in the death , as well as the 15-year-old , who has not been named because he is a juvenile .