Jelena Dokic's father remains in jail

A judge ordered today that the father of Australian tennis player Jelena Dokic remain in jail for 30 days pending an investigation into his alleged threats against the Australian ambassador in Belgrade.

Damir Dokic was detained in his home in northern Serbia on Wednesday. Police said they found seven hunting rifles, a gun and two bombs during the search of his house on Fruska Gora.

Serbian newspaper Blic quoted Damir Dokic this week as saying he had called the Australian embassy and threatened to "fire a rocket" on the car belonging to the ambassador to Serbia.

Dokic said he was angry over an interview his daughter gave to Australia's Sport&Style magazine in which she accused him of beating her.

He added that "there is no child that was not beaten by parents - the same with Jelena."

Serbia's Interior Minister Ivica Dacic said police have an obligation to respond to any threats to foreign diplomats.

Jelena Dokic, who switched her nationality from Australian to Serbian before splitting from her father and returning to Australia, has won five WTA Tour titles and reached a career-high ranking of fourth in 2002.

She struggled with form and injuries since, but reached the quarterfinals of this year's Australian Open and is currently ranked 74th.