The force of the device, hidden under a bench at the eastern end of the corridor outside the Chamber, blew off the door to the office of Democratic Leader Robert C. Byrd. Senator Byrd was an active supporter of involvement in Grenada, and had recently made attempts to garner support for retaliating against recent attacks against U.S. Marines stationed in Lebanon. His recent actions may have drawn attention from the terrorist group, and led to his targeting. Furthermore, the blast also punched a hole in a wall partition, sending a shower of pulverized brick, plaster, and glass into the Republican cloakroom. The explosion caused no structural damage to the Capitol. The force shattered mirrors, chandeliers, and furniture. Officials calculated damages of $250,000 ().