It is assumed at least one more poisoned jar is in circulation, a police spokesman told the Austria Press Agency (Apa) on Sunday.
In its statement, the Burgenland police said the warning about the German-Swiss brand’s products was being issued following ongoing investigations in neighbouring Germany.
As part of these investigations, it said authorities had been informed about potentially contaminated HiPP jars circulating in Eisenstadt.
There police seized the carrots and potatoes jar, which was found to contain rat poison after an examination on Saturday.
Authorities are urging vigilance about any suspicious products, warning parents to look for damaged or open lids, a missing safety seal, unusual or spoiled odour, and a white sticker with a red circle on the bottom of the glass jar.
A toxic additive was also found in similar jars seized by police after laboratory tests in the Czech Republic and Slovakia, the police statement said.
“Should you possess HiPP baby food with this marking or notice any irregularities: do not open it,” it warned.
“Do not consume it under any circumstances or offer it to a small child.”
The Austrian Agency for Health and Food Safety warned parents whose babies have consumed the food to consult a doctor if their children show signs of bleeding, extreme weakness or paleness.
The Eisenstadt public prosecutor’s office has also launched an investigation into intentional endangerment of the public, Apa reported.
Customers have also been asked not to consume HiPP jars purchased at Eurospar, Interspar and Maximarkt, and to return them for a refund.
There are more than 1,500 Spar shops across Austria.
Police previously stressed baby food sold in other shops remained unaffected by the recall.
HiPP’s baby formula was also unaffected.