From outside the tape, it is apparent that the office's front doors were damaged by the explosion.
Dale Barnett, the co-owner of Barnett Music Exchange, just four doors from the office in the Tulsa suburb of Bixby, says he just opened the musical instrument store on Monday.
Federal authorities are searching for surveillance video of a commercial area that houses an Oklahoma Air Force recruiting center where an explosive device was set off.
As noted, on the scene arrived police and agents of the Bureau of alcohol, tobacco, firearms and explosives (ATA).
FBI, ATF investigating bomb at Bixby, Okla., Air Force office
In Bixby, Oklahoma in the recruiting center Voyenno-air forces of the U.S. there was an explosion. They began in 2008 under somewhat similar circumstances when someone placed a small bomb outside of the military recruiting office in Times Square in New York City overnight.
The blast took place around 10.30pm local time (4.30pm GMT) in Bixby, which lies around 15 miles to the south of Tulsa.
FBI Special Agent Jessi Rice said initial information received about the Air Force recruiting center bombing indicates a pipe bomb was used, CNN reports. They have witnesses who reported a motorcycle seen leaving the area, and agents are following up on that lead, she said.
No arrests have been made. As of yet, the Federal Bureau of Investigation has not labeled the crime as act of domestic terrorism.
1 killed, 8 wounded at gender reveal party
Right now, police are not releasing the names of the victims. "You're hoping that there won't be situations like this". One of those people is in critical condition according to Cincinnati's NBC affiliate WLWT .