A raid in Zella, close to an oilfield some 800 kilometres southeast of the capital Tripoli, is the third IS attack targeting Haftar's forces in recent weeks.
Strongman Khalifa Haftar's self-styled Libyan National Army launched an offensive against Tripoli, the seat of the internationally recognised Government of National Accord, on April 4.
Sushma Swaraj said there were over 500 Indians in Tripoli even after massive evacuation from Libya and the travel ban.
The fighting has since eased somewhat as both Libyan National Army and Government of National Accord appeared to be preparing for the next phase of the battle.
The World Health Organisation said that there were at least 15 deaths in the last two days while 1,066 others have been wounded till now.
The minister said that if the Indians stranded in the Libyan capital do not leave immediately, then it may not be possible to evacuate them later.
The Foreign Ministry is gifting the cash to UNHCR from its Africa Fund "given the current situation in Libya and the risks civilians, refugees and migrants are exposed to," the statement said.
Fighting on the ground, the two sides have launched daily air raids and accuse each other of targeting civilians.
Condemning the recent military mobilisation of forces in southern Tripoli , The United Nations Support Mission in Libya is said to be monitoring the situation closely.
A car bomb exploded near the ministry following which a suicide bomber blew himself up on the second floor of the building while a second attacker died when a suitcase he was carrying exploded.
The mass grave was discovered through confessions made by IS members captured during the battle to retake Sirte, according to the organised crime department in Misrata to the west of Sirte.
Badi is a senior commander of the armed Al-Sumud front and the Fajr Libya brigade, both of which have challenged the shaky UN-backed coalition Government of National Accord.
Jufra lawmaker Ismail al-Sharif said IS fighters attacked the city with 25 vehicles, beheaded five civilians and torched local government and security offices.
Nigerien and US officials told the newspaper that Central Intelligence Agency operatives have been flying surveillance drones from a small airport in the town of Dirkou.
Indiscriminate shelling hit the headquarters of the US embassy in the Libyan capital, as clashes continue between forces and militias