NEW DELHI (Reuters) - The number of militant camps in Pakistan has increased in the past year despite a crackdown by the Islamabad government, India's army chief said on Saturday.

"I would not talk about the numbers specifically right now...but infrastructure is existing and active," General Deepak Kapoor told the Press Trust of India (PTI).

India has said the militant attack on its financial capital Mumbai last November, in which 179 people were killed, was planned from a camp in Pakistan.

Relations between nuclear-armed India and Pakistan have been strained since then, with India saying Pakistan was not doing enough to rein in militants.

Indian Foreign Secretary Shivshankar Menon said this week Pakistan's main spy agency was linked to planners of the Mumbai attacks.

Pakistan has denied any involvement by state agencies and has said it was investigating a dossier of information from India, to which it will reply next week.