§ 540B. Investigation of serial killings
(a)
 In General.— 
The Attorney General and the Director of the Federal Bureau of Investigation may investigate serial killings in violation of the laws of a State or political subdivision, if such investigation is requested by the head of a law enforcement agency with investigative or prosecutorial jurisdiction over the offense.
(b)
 Definitions.— 
In this section:
               	 	
               	 	
(1)
 Killing.— 
The term “killing” means conduct that would constitute an offense under section 
1111 of title 
18, United States Code, if Federal jurisdiction existed.