Authorities say a package that exploded inside of an Austin home on Monday, killing a teenager and wounding a woman, is believed to be linked to a deadly package sent to another home in Texas' capital city earlier this month.

Austin police Chief Brian Manley said at a news conference that investigators believe the attacks are linked because in each case, the package bombs were left on the victims' front doorsteps and not delivered by a mail service. He said the U.S. Postal Service doesn't have a record of delivering a package to the Austin home where the explosion occurred Monday. He said that package was brought into the kitchen where it detonated, killing a 17-year-old boy and injuring the woman.

Read more: Houston Chronicle