After last week's Boston Marathon bombings, the Nike 'Boston Massacre' shirts currently on sale have been pulled due to the insensitivity they engender. 

The Nike Boston Massacre t-shirts were spotted by "Late Show with David Letterman" producer, Eric Stangel, as he posted a picture of the offending Nike Boston Massacre merchandise on Twitter. 

Stangel's discovery of the offensive shirts was first reported by Uproxx before Nike responded. Employees told Stangel the shirts would be taken down from display. 

ABC News notes the Nike Boston Massacre shirts reference the 1770 "Boston Massacre" and were created to commemorate the two series sweeps of the Boston Red Sox by the New York Yankees. The series sweeps in 1978 and 2006, were nicknamed the "Boston Massacre" by fans of the rival teams. 

A Nike company spokesman released a statement about the Nike Boston Massacre shirts in an effort to head off any ensuing controversy:

"The shirts being referenced are older baseball shirts that were predominantly being sold through our Factory Stores Outlets. In light of the tragedy in Boston we took immediate action last week to remove this product from distribution. We conducted this process as quickly as possible and are confident the product has been removed from distribution."

The Nike Boston massacre shirts were made long before the Boston Marathon bombings last week, and their association with the bombings were never intended, added Yahoo Sports.  

Nike rival Adidas has released shirts for sale that read: "Boston stands as one" on its website, with all proceeds going to One Fund Boston. 

Adidas spokeswoman Katja Schreiber said in an email to CNN:

"There has been an overwhelming demand for the Boston Tribute Tee since its launch last week, and we were out of stock within a day. Due to the overwhelming demand, we decided to further extend our support."