Islamabad police has arrested seven criminals involved in crimes of having illegal arms, liquor, robbery and thieving, said police. Police sources said that during operation and patrolling in separate incidents police arrested 7 criminals and seized tape recorder worth Rs 8,000, Laptop worth Rs 35,000, imported Mobile phone, 2-bottles liquor and Carbine 12-Bor including 4 cartages. Police separately has lodged cases against them and started further investigation.