US authorities investigating ketamine death of 'Friends' star Matthew Perry
                        
                                                    
                                
                                
                                
                                
                                
                                    Los Angeles homicide detectives and federal agents are investigating how "Friends" star Matthew Perry obtained the high dose of the powerful prescription drug ketamine that was found in his body and determined to have caused his death, police said.                                
                            
                        
                        
                                                    
                        
                        
    
    
        
            
            
        
        
    
                        
                            Los Angeles homicide detectives and federal agents are investigating how "Friends" star Matthew Perry obtained the high dose of the powerful prescription drug ketamine that was found in his body and determined to have caused his death, police said.