Police: Tripwire May Have Been Used In Latest Austin Explosion

Law enforcement -- including federal agents from the FBI and ATF -- flooded a normally quiet neighborhood in southwest Austin overnight, after an explosion injured two people. Police believe a bomb left on the side of the road exploded, injuring two people.

According to a first responder, one of the victims had a nail in his wound, reports correspondent Omar Villafranca.

Police say the two men injured in last night's explosion were with their bikes when the bomb went off.  "It is very possible that this device was a device that was activated by someone either handling, kicking, or coming in contact with a tripwire that activated the device," said Austin Interim Police Chief Brian Manley.

CBS affiliate KEYE-TV reported that the incident happened in the 4800 block of Dawn Song Drive near Mopac and 290 around 8:45 p.m. Sunday.

Austin police Chief Brian Manley said investigators will keep the surrounding area closed at least until daybreak as evidence is collected. He also mentioned police received a separate report of a suspicious backpack in the area and are still working to "clear" that.

Austin police wrote earlier that they responded to a so-called "bomb hot spot" call on Dawn Song Drive. Two males were rushed to a hospital with injuries that were not considered to be life-threatening.
The two males were sent to St. David's South Austin Medical Center and a spokesperson said they are in good condition.

The FBI and ATF are on the scene investigating.

Police are currently investigating three explosions that occurred this month and said that they could be crimes of hatred. One package bomb exploded at an east Austin home March 2, killing a 39-year-old man. Two package bombs in other parts of the city exploded March 12, killing a 17-year-old, wounding his mother and injuring a 75-year-old woman.

Officials have upped the reward to $115,000 for information that leads to an arrest for the prior package explosions. Manley said investigators have not ruled out any possible motive or have an indication "what the ideology is behind this."

There is no word yet if this recent incident is connected, CBS affiliate KEYE-TV reports.