Delhi Chief Minister Arvind Kejriwal on Monday accused Prime Minister Narendra Modi of surrendering to Pakistan by allowing investigators from that country to probe the January terror attack on the IAF base in Pathankot in India.Kejriwal told the media that Pakistan had been harbouring terrorism against India and asked how its security and intelligence officials were being allowed to investigate something they had sponsored."We were saying ISI (Pakistan's spy agency) was responsible, it was a Pakistan-sponsored terror. Has this position changed?" the Aam Aadmi Party leader told reporters here. "Prime Minister Modi has surrendered before Pakistan," he said.A Pakistani team is in India to investigate the January 2 terror attack blamed on Pakistani terrorists. The attack left seven Indian security personnel and all the terrorists dead.