NEW DELHI, April 15 -- Three days after a brigadier and his son were allegedly assaulted by a group of men outside their residence in southwest Delhi's Vasant Enclave in the presence of a police officer, Delhi Police finally arrested two accused on Tuesday after they surrendered. Deputy commissioner of police (south west) Amit Goel identified the accused as Satender Siwach, alias Sonu, 49, and Sanjay Sharma, 56, both residents of Mehram Nagar. Siwach is director of Choudhary Aviation Pvt. Ltd, which provides chartered and cargo flight services, while Sharma runs a dhaba in the same neighbourhood. Earlier on Tuesday, Delhi LG Taranjit Singh Sandhu said he was "deeply concerned by the incident" and that he had spoken to the brigadier to "enquire about the incident and their well-being". As per Brigadier Parminder Singh Arora, he found two men drinking inside a Mercedes-Benz parked outside his house around 10 pm on Saturday. When he objected, the men dismissed him, so he called the police. However, when the PCR arrived, the officer said he could not take action and instead sat in the car to speak to the men. In the meantime, seven or eight individuals arrived and assaulted his 23-year-old son and the brigadier. The brigadier's wife, who tried to intervene, was allegedly verbally abused and manhandled. According to the DCP, the accused had been "on the run" after the incident and were not present at their residence when police visited on Monday. However, they walked into the station on Tuesday afternoon. During questioning, the accused reportedly told police that they randomly selected the location to park and drink. "They're evasive in their answers but, it appears that they hadn't come to meet anyone there," the officer said. An FIR was lodged on Monday afternoon. The army said a military police team has been directed to assist....