The outburst against the outsourcing of jobs from the US took an ugly turn on Tuesday, when an Indian-American candidate for the Congressional polls in California received threatening phone calls.Democrat Rohit Khanna, who contested the Congressional elections from San Francisco and San Mateo County, received a series of phone calls threatening to ‘‘eliminate’’ him and his supporters, a media report said. Khanna was informed about the calls yesterday.The unidentified caller accused Khanna and other Indians of taking jobs from real Americans, the Democrat’s Campaign Manager Andres Ramirez was quoted as saying by the San Mateo Daily Journal. Ramirez initially ignored the calls and hung up, but was alarmed when a caller said he would ‘‘eliminate Ro and all you guys’’. Khanna, popular among his supporters as ‘‘Ro’’, was feeling low after his loss in the election and declined to comment.‘‘These kind of calls happen in every campaign,’’ said Ramirez. ‘‘But these particular calls had a different tone.” A complaint had been lodged with police and was being investigated, the report said.Khanna, who polled over 14,000 votes to finish second, lost to Republican Tom Lantos, who got 40,000 votes.