Delhi Police has arrested Lavkesh Bajaj, owner of the hotel building in Malviya Nagar where a devastating fire killed 21 people on Wednesday, officials said. Bajaj was arrested hours after the blaze ripped through the Flourish Stay B&B in the congested Hauz Rani area in south Delhi. Police had earlier issued a look out circular (LOC) against Bjaja and his wife, and launched an operation to trace them. The blaze tore through the hotel allegedly operating without a fire NOC in a congested bylane in the area, killing at least 21 people, including 10 Indians, nine African nationals, and two from Turkmenistan, officials said. The blaze spread rapidly through the five-storey building, which allegedly lacked the mandatory fire no-objection certificate (NOC). The structure had only one entry-exit point, permanently sealed windows and a sensor-operated main door, factors that investigators believe hampered the evacuation efforts.