A day after Punjabi singer Sidhu Moosewala was shot dead, Delhi Police on Monday questioned jailed gangster Lawrence Bishnoi here in connection with the case, according to officials.

The development came as a Delhi court refused to entertain a plea filed by Bisnoi, who has been accused of plotting the murder, that he apprehended a fake encounter by the Punjab Police. Special Judge Praveen Singh said there was no ground to entertain the plea that sought a direction to the jail authorities not to give his custody to Punjab police, according to court sources. Officials said a team of the Delhi Police Special Cell quizzed gangsters Lawrence Bismoi and Shahrukh, who have been lodged in the central jail here, for allegedly plotting the killing of Moosewala from inside the Tihar prison.. Gangsters Kala Rana and Kala Jathedi who are also in police custody were also questioned in the matter, police said. This comes in the backdrop of Punjab police chief V K Bhawra' claim on Sunday that prima facie, it seems to be an inter-gang rivalry between Lawrence Bishnoi Group and Lucky Patial group. "Lawrence Bishnoi group has taken the responsibility of Sidhu Mooswala's murder citing it as a retaliation to the killing of Vicky Midhukhera," he said. Canada-based gangster Goldy Brar claimed responsibility for the murder on Sunday and said it was planned by him and the Lawrence Bishnoi group. "As of now, it has been suspected that his (Moosewala's) killing could have been plotted by some gangsters and their aides jailed in Tihar.