Grounds of bail

One of my friends Himanshu was charged for a murder & half murder cases along with arms act in 2018.He was accused of sections 34,302 and 307 of Indian Penal Code (IPC) 1860 & under sections 25,54,59 of Indian Arms Act . But none of them were proven by the Police Investigation. Later in 2020, he was detained for a period of 60 days. Within this period the full completion of TIP took place and the eye-witness refused to identify Himanshu as one of the accused.On what grounds Himanshu should be granted bail or would he be imprisoned for a higher period?