AUSTIN, Texas (CBSDFW.COM/AP) — Austin police say they have responded to at least 370 calls reporting suspicious packages but found nothing dangerous in the wake of three package bombs that killed two people and wounded two others.

The Austin Police Department said in a tweet that, as of Wednesday morning, an additional 108 suspicious package calls had been received — increasing the total to 370.

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A package bomb exploded at an east Austin home on March 2, killing a 39-year-old man.

Then, on Monday, package bombs at two addresses in other parts of the city exploded, killing a 17-year-old, wounding his mother and injuring a 75 year-old woman.

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No arrests have been made.

Police continue to urge anyone receiving unexpected packages to call 911 without handling or attempting to open them.

Austin police announced a $50,o0o reward for information leading to an arrest in this case on Tuesday, along with the $15,000 reward announced by Governor Greg Abbott on Monday.

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(© Copyright 2018 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)