US media have identified the suspect linked to a series of deadly parcel bombs targeting the Texas city of Austin as Mark Anthony Conditt, 23.
The man was killed after he detonated an explosive as officers approached his car following a chase in Round Rock, north of the Texas state capital.
Officials say he lived about 20 miles (30km) from Austin in a shared home.
The incident follows four bomb attacks in the Austin area. Officials warn he may have placed more bombs in the area.
Police have not formally identified the suspect, but he has been named in US media as Mark Anthony Conditt, aged 23.
