Austrian police say a 28-year-old man who tried to kill his ex-wife with a booby-trapped car bomb exploded in the house and seriously wounded her at her home.

The 27-year-old victim, a mother of three, was rushed to hospital on Tuesday after the incident, suffering second and third degree burns in 40 percent of her body and underwent two skin transplants.

According to Agence France-Presse, local police announced on Thursday that they had arrested the victim and another individual, who pleaded guilty to the booby-trapped explosion that was placed outside the entrance of the young woman's home in Gautaring in the south of the country.

The partner, a 29-year-old soldier, "put the booby-trapped parcel in front of the woman's apartment and knocked on the door before leaving the site," while the freewheeling nearby detonated the explosive device remotely.

Police said the men tried their homemade bomb this summer in a forest after buying their ingredients online.

A total of 41 of Austria's 73 murder victims in 2018 were women, according to statistics from the country's Interior Ministry of 8.8 million people.