A serial bomber suspected of targeting neighborhoods around Austin, Texas, has died, officials confirmed on Wednesday morning.

Local law enforcement officials tracked down the suspect with the help of state and federal officials.

Since March 2, five bombs have gone off in and around Austin. A sixth unexploded bomb was found at a FedEx facility in the city.

The bombs have killed two people and injured four others. Police said they believe the incidents are all related "because of the specific contents of these devices."

In light of the explosions, which have so far followed a similar pattern in areas surrounding Austin, law enforcement officials said people should not handle any unexpected or suspicious packages, and instead call 911.

Here's a timeline of all the suspicious packages and bombs that have been discovered, and the death of the suspect: