Two arrested over Sydney double stabbing

Two men have been arrested over a double stabbing in Sydney's west which has left one man in a critical condition.

Police were called to a home on Collins Street in Seven Hills about 6.40pm after reports of a stabbing.

Two men, aged in their 20s, were taken to Westmead Hospital, with stab wounds.

One is in a critical condition, while the other has less serious wounds.

Two men aged in their 20s were arrested at another home in Seven Hills a short time later and were being questioned by police.