( CNN ) -- A Pakistani court has ordered a jailed American diplomat to remain in custody for 14 more days , authorities said Friday . The man 's lawyer then filed a petition calling for his immediate release , saying he is covered under diplomatic immunity . Raymond Davis , who allegedly shot and killed two men , was transferred from police custody to `` judicial remand , '' said Munir Ahmed Khan , a member of the police investigative team . Pakistani law says police can only keep a suspect in custody for 14 days . After that , a judge can either release the suspect -- on bail or for lack of evidence -- or transfer him to judicial custody , which is usually a prison instead of a police station lock-up . Davis said he was attacked by the two men on January 27 who tried to rob him as he drove through a busy Lahore neighborhood , according to the U.S. Embassy in Pakistan . The U.S. State Department has demanded that Davis be freed . Under international agreements , people carrying diplomatic passports are granted diplomatic immunity , the department said . Davis ' lawyer filed a petition Friday , challenging the court 's jurisdiction over the case . A judge will hear arguments on February 25 . The United States says Davis was assigned to the U.S. Embassy in Islamabad but was working at the U.S. Consulate in Lahore at the time of the shootings . Lahore Police Chief Aslam Tareen rejected Davis ' claim that he shot the men in self-defense . `` It was clear cut murder , '' Tareen told reporters . Witnesses told police that Davis kept firing even when one of the men was running away , Tareen said . `` It means he wanted to ensure that that they were killed , '' he said . He acknowledged the two men shot were armed , and that one of them pointed his gun at Davis -- but did n't shoot . `` All the bullets were in their chamber , '' he said . The detention has strained relations between the United States and Pakistan . Secretary of State Hillary Clinton , according to the State Department , has raised the issue with Pakistani officials . And the U.S. ambassador to Pakistan , Cameron Munter , has met with Pakistani President Asif Ali Zardari on the issue . Members of Congress told senior Pakistani leaders that billions of dollars of U.S. aid are in jeopardy unless Davis is released . `` We indicated it could very well be '' that the United States might consider withholding funding , Rep. Howard `` Buck '' McKeon , R-California , said Tuesday after returning to Washington from meetings in Pakistan and Afghanistan . McKeon said he and two other congressmen on the trip had frank conversations with Pakistani Prime Minister Yousaf Raza Gillani and other senior officials about Davis . `` It is entirely possible that a member of Congress would come down and offer an amendment to cut funding for Pakistan , based on their detaining Mr. Davis , and my guess is there would be a lot support for such an amendment , frankly because of the outrage of detaining an American with diplomatic immunity , '' said Rep. John Klein , R-Minnesota . The U.S. spent more than $ 1.5 billion in non-military aid to Pakistan in fiscal year 2010 . The case has sparked some protest and fueled anti-American feelings in Pakistan . During several protests last week , hard-line clerics condemned the shootings and demanded the government not release Davis to the U.S. government . Local television showed a rally in Karachi where protesters re-enacted their version of the shooting . Men wearing smiling masks and holding toy guns played the part of Davis and gleefully danced around several protesters , who pretended to be the shooting victims . CNN 's Jill Dougherty and Charley Keyes and Journalist Nasir Habib contributed to this report .
NEW : This means the product will ship as received by the manufacturer, sealed, with all advertised components, and with the manufacturer warranty. NEW : Police chief calls the case `` clear-cut murder '' Consulate employee Raymond Davis has been jailed since the January 27 shooting . The State Department says the man has diplomatic immunity .